JP7599642B2 - Product sales system, product sales method, and product sales computer program - Google Patents

Description

The present invention relates to a product sales system, a product sales method, and a computer program for product sales.

Product sales systems that distribute owned products in secondary circulation are becoming widespread. Such product sales systems match sellers and buyers online to carry out product buying and selling transactions, as disclosed, for example, in JP 2002-49769 A (Patent Document 1) and JP 2018-41446 A (Patent Document 2).

JP 2002-49769 A JP 2018-41446 A

Usually, manufacturers and agents make profits by selling products to wholesalers. In the case of high-priced products such as furniture, the balance of power between manufacturers and agents in the distribution market tends to be weak. As a result, manufacturers and agents do not have the power to determine prices, which creates a situation in which it is difficult to make a profit unless they sell directly to the manufacturer or agent themselves.

Despite the situation manufacturers find themselves in, in conventional secondary distribution product sales systems, it is the secondary sellers and the operators of the secondary distribution system who benefit. However, manufacturers and agents often receive repair requests when secondary products in the secondary distribution are damaged or deteriorate with age, and inquiries about how to handle secondary products in the secondary distribution. Even in these cases, manufacturers are unable to confirm whether the product is a primary or secondary product, so they may have no choice but to respond to such requests free of charge or at a low price, which reduces the motivation of primary sellers such as manufacturers to provide their services.

The object of the present invention is to provide a product sales system that provides primary sellers with a market for buying and selling primary products, while also informing primary sellers of the existence of secondary products and preventing a decline in the willingness to provide services for secondary products.

The product sales system of the present invention includes an information storage unit, a display data transmission unit, a trading execution unit, and an allocation execution unit. The information storage unit stores at least information on a primary seller who first distributes a product in the market as a primary listing product, primary listing information including the content and price information of the primary listing product, and secondary listing information including a secondary seller who distributes a product that has been distributed in the market as a primary listing product secondarily in the market as a secondary listing product and the content and price information of the secondary listing product. The display data transmission unit transmits display data for displaying at least the content and price information included in the primary listing information and the secondary listing information on a display screen of a communication terminal of a consumer. The trading execution unit executes a trading transaction of the primary listing product or the secondary listing product via the communication terminal of a consumer. After a trading transaction of the primary listing product or the secondary listing product is concluded, the allocation execution unit executes the necessary procedures to provide the primary seller with information on the concluded trading transaction and to allocate a portion of the trading price of the secondary listing product to the primary seller.

In the product sales system of the present invention, after the transaction execution unit has concluded a transaction for a secondary listing, the display data transmission unit also provides information about the concluded transaction to the primary seller, thereby informing the primary seller of the existence of the secondary listing. In addition, the allocation execution unit also allocates a portion of the transaction proceeds to the primary seller, thereby preventing a decline in the primary seller's willingness to provide services for the secondary listing (e.g., willingness to provide product warranties). In this specification, the portion of the transaction proceeds allocated to the primary seller is referred to as a "revenue share."

In this specification, a product that is offered for the first time on a buying and selling market formed by the product sales system of the present invention is a "primary product," and a product that has been circulated on the buying and selling market and is then offered on the buying and selling market again is a "secondary product." Therefore, a "primary product" is not necessarily a new product, but is a concept that can include used products, and a "secondary product" is a product offered for the second or third time as well.

The term "primary seller" refers to a person who has listed a "primary listed product," and is assumed to be, but is not limited to, a manufacturer of the product, a sales agent of the manufacturer (including importers and wholesalers), or a distributor of the product. Additionally, the term "secondary seller" refers to a purchaser of the product and a person who has listed a secondary listed product.

The information storage unit may further store guarantor information regarding a guarantor that directly or indirectly guarantees a product for a primary listed product that has been primarily distributed by the primary seller, and authentication information regarding whether the guarantor has been authenticated to directly or indirectly guarantee the product for the primary listed product. The allocation execution unit may then execute the necessary procedures to allocate a portion of the purchase price of the secondary listed product to the primary seller after a purchase transaction of a secondary listed product that has been authenticated to guarantee the product has been concluded. The guarantor may vary depending on the product, but may be, for example, the product manufacturer. Therefore, consumers of the product can purchase the product with peace of mind by checking the presence or absence of authentication information. It is also possible to allocate a portion of the purchase price to the primary seller as compensation for the product guarantee.

Primary listing products that have not been certified by the guarantor may be listed on the buying and selling market. In order to handle such products, the product sales system may further include an authentication information transmission unit that transmits primary listing information of a primary listing product that has not been certified by the guarantor to the communication terminal of the guarantor so that the guarantor can authenticate it, and an information registration unit that has the function of storing authentication information about the primary listing product that has been certified by the guarantor in the information storage unit. In this way, even if a primary listing product that has not been certified by the guarantor is listed, it is possible to assign authentication information later.

Whether or not a product is certified is managed as authentication information, so it is not essential, but it is preferable that certified primary listing products and secondary listing products are given an identifier indicating that they are certified products. In this way, it is possible to determine whether a product is certified or not just by looking at the identifier.

The identifier may be of any type, but may be, for example, a two-dimensional code such as a QR code (registered trademark). Furthermore, when the identifier is read by the communication terminal, the display data transmission unit may transmit display data for reading the details of the product to which the identifier is assigned from the information storage unit and displaying the details on the display screen of the communication terminal. Using such an identifier saves secondary sellers the trouble of inputting the details of the product when listing the product on the buying and selling market, which will encourage secondary listings to become more common.

The price of a secondary listing is determined by various factors, such as the condition of the product itself, the amount of product in circulation, and the time of year, and it is possible that the secondary seller will not be able to set an appropriate price. For this reason, the product sales system of the present invention may further include a reference price information providing unit that provides information about a reference price from the guarantor to the secondary seller. This allows the secondary seller to determine the listing price by referring to a reference price deemed appropriate by the guarantor.

The information storage unit stores data regarding the expiration date of the product warranty for the primary listed item and the secondary listed item, and the display data transmission unit may transmit the remaining product warranty period in the display data if there is any product warranty period remaining for the primary listed item and the secondary listed item.

The present invention can also be understood (or expressed) as a method for selling goods. The method for selling goods of the present invention includes an information storage step for storing at least information on a primary exhibitor who first distributes goods in the buying and selling market as primary exhibited goods, primary exhibitor information including details and price information on the primary exhibited goods, secondary exhibitor information including details and price information on the secondary exhibited goods who distributes goods that have been distributed in the buying and selling market as primary exhibited goods in the buying and selling market as secondary exhibited goods, a display data transmission step for transmitting display data for displaying at least the details and price information included in the primary exhibited information and the secondary exhibited information on a display screen of a communication terminal of a consumer, a transaction execution step for executing a transaction of the primary exhibited goods or the secondary exhibited goods via the communication terminal of a consumer, and an allocation execution step for providing information on the established transaction to the primary exhibitor after the transaction of the primary exhibited goods or the secondary exhibited goods is established and executing a procedure required to allocate a part of the transaction amount of the secondary exhibited goods to the primary exhibitor.

The information storage step may further store guarantee entity information regarding the guarantee entity that directly or indirectly provides a product guarantee for the primary listed product that the primary seller has placed in primary distribution, and authentication information regarding whether the guarantee entity is authenticated to directly or indirectly provide a product guarantee for the primary listed product, and the allocation execution step may allocate a portion of the purchase price of the secondary listed product to the primary seller after a purchase transaction for the secondary listed product that is authenticated to provide a product guarantee is concluded.

The present invention can also be understood (or expressed) as a computer program for selling products that is installed and executed on a computer. The computer program for selling products of the present invention is configured to realize in a computer the following: primary listing information including information on a primary seller who first distributes a product in the buying and selling market as a primary listing product and content and price information on the primary listing product; secondary listing information including a secondary seller who distributes a product that has been distributed in the buying and selling market as a secondary listing product in the buying and selling market as a secondary listing product, and content and price information on the secondary listing product; a display data transmission unit that transmits display data for displaying at least the content and price information included in the primary listing information and the secondary listing information on a display screen of a consumer's communication terminal; a transaction execution unit that executes a transaction for the primary listing product or the secondary listing product via the consumer's communication terminal; and an allocation execution unit that executes the necessary procedures for providing the primary seller with information on the completed transaction after the transaction for the primary listing product or the secondary listing product is completed and allocating a portion of the transaction price for the secondary listing product to the primary seller.

The information storage unit further stores guarantor information regarding the guarantor that directly or indirectly provides a product guarantee for the primary listed product that the primary seller has placed in primary distribution, and authentication information regarding whether the guarantor is authenticated to directly or indirectly provide a product guarantee for the primary listed product, and the allocation execution unit may execute the procedures required to allocate a portion of the purchase price of the secondary listed product to the primary seller after a purchase transaction of the secondary listed product that is authenticated to provide a product guarantee is concluded. Of course, this program may also be recorded on a computer-readable recording medium.

1 is a block diagram showing an example of a product sales system according to the present invention; 13 is a flowchart showing the flow of primary listing in case 1. 13 is a flowchart showing the flow of secondary listing in case 1. FIG. 13 is a diagram showing an example of an identifier IC attached to a product. 13A and 13B show secondary listings using an identifier IC. 13 is a flowchart showing the flow of primary listing in case 2. 13 is a flowchart showing the flow of secondary listing in case 2. 13 is a flowchart showing the flow of primary listing in case 3. 13 is a flowchart showing the flow of secondary listing in case 3.

Below, the embodiments of the product sales system, product sales method, and product sales computer program of the present invention will be described in detail with reference to the drawings.

<Overall composition>
1 is a block diagram showing an example of a product sales system realized by executing a product sales computer program according to the present embodiment. The product sales system 1 is made up of a plurality of user terminals 3 (3A, 3B, 3C, 3D, . . . ) and a management server 5.

The product sales system 1 creates a market for buying and selling products, matches primary and secondary sellers with demanders, and executes product buying and selling transactions. After a buying and selling transaction of a primary or secondary listed product is completed, it provides information about the completed buying and selling transaction to the primary seller and distributes a portion of the buying and selling price of the secondary listed product to the primary seller (guarantor).

A "good" is a tangible movable property, and in this embodiment, a high-priced good such as furniture is assumed. A good that is put up for sale on the market for the first time is a "primary good", and the person who puts up the primary good is a "primary seller". A good that has been distributed on the market and is put up for sale on the market again is a "secondary good", and the person who puts up the secondary good is a "secondary seller". In this specification , a "product warranty" is a warranty provided by a warranty entity, and is usually a warranty provided by a manufacturer ( repair when the product is damaged or deteriorated over time) , but it is also assumed that some warranty entities may provide a warranty that is more generous (e.g., a discount on repair costs) and longer than the original warranty that the manufacturer provides for the product itself.

In this embodiment, the following three types of “primary sellers” are assumed:
・Case 1: Manufacturer of the product ・Case 2: Sales agent of the product. This includes those who have signed an agency contract with the manufacturer, and importers and wholesalers who purchase products from the manufacturer, and are businesses that have a direct relationship with the manufacturer of the product ・Case 3: Sales business of the product. This is a business that does not have a direct relationship with the manufacturer.

The multiple user terminals 3 are assumed to be mobile phones, smartphones, personal computers, etc., but are not limited to these. Each user terminal 3 is a general-purpose terminal and has a communication unit 7 for connecting to the telecommunications line NW, an input unit 9 such as a touch panel or a camera, a data storage unit 11, a control unit 13, a display control unit 15 that constitutes part of the control unit 13, and a display screen 17. A user of this system installs in advance into his/her own user terminal 3 a part of the computer program for selling goods that is necessary for the operation of the user terminal 3. In this way, by executing the computer program for selling goods, the product sales system 1 is constructed for the user. By operating his/her own user terminal 3, the user can use the product sales system 1 via the computer program for selling goods. Of course, instead of an individual computer program, the product sales system 1 may be made available by opening the website of the product sales system 1 in a web browser. Of course, each user terminal 3 may be a dedicated terminal.

In FIG. 1, for the sake of convenience, four user terminals 3 are shown, but of course many more user terminals 3 may be connected. Furthermore, although each user terminal 3 is essentially the same, they are illustrated as being distinguished according to the user's position when using the terminal: primary seller terminal 3A when the user is a primary seller, secondary seller terminal 3B when the user is a secondary seller, consumer terminal 3C when the user is a consumer, and guarantor terminal 3D when the user is a guarantor. Furthermore, when it is necessary to distinguish between the components of each user terminal 3 and explain them differently, the corresponding terminal type symbols A, B, C, or D are added to the symbols of the components to distinguish them.

The management server 5 is composed of a communication unit 19 connected to the telecommunications line NW, an information storage unit 21, and a control unit 23. The control unit 23 includes a display data transmission unit 25, a buying and selling transaction execution unit 27, an allocation execution unit 29, an authentication information transmission unit 31, an information registration unit 33, and a reference price information provision unit 35.

The information storage unit 21 is a database held by the management server 5, and stores at least primary listing information including information on the primary seller, details of the primary listing product (including product ID) and price information, and secondary listing information including the secondary seller and details of the secondary listing product (including product ID, information on past consumers, expiration date and remaining period of product warranty) and price information. In this embodiment, it also stores guarantor information on the guarantor who directly or indirectly guarantees the product for the primary listing product that the primary seller has primarily distributed, authentication information on whether the guarantor has been authenticated to directly or indirectly guarantee the product for the primary listing product, and the amount of "revenue share" (part of the purchase price allocated to the primary seller) that has been generated for this product in the past. The guarantor may differ depending on the product, but in this embodiment, it is the manufacturer of the product.

In response to a request from the consumer terminal 3C, the display data transmission unit 25 transmits display data to the consumer terminal 3C for displaying at least the content and price information contained in the primary listing information and secondary listing information on the display screen 17C of the consumer terminal 3C.

The buying and selling transaction execution unit 27 executes buying and selling transactions of primary listed products or secondary listed products via the consumer terminal 3C.

After a sale of a primary exhibited product or a secondary exhibited product is concluded, the allocation execution unit 29 provides the primary exhibitor with information about the concluded sale and executes the necessary procedures to allocate a portion of the purchase price of the secondary exhibited product to the primary exhibitor. In this embodiment, in particular, after a sale of a secondary exhibited product that has been certified to provide a product warranty is concluded, the allocation execution unit 29 executes the necessary procedures to allocate a portion of the purchase price of the secondary exhibited product, the "revenue share," to the primary exhibitor.

The authentication information transmission unit 31 transmits the primary listing information of the primary listing product that has not been authenticated by the guarantor to the guarantor terminal 3D so that the guarantor can authenticate it. In other words, the primary listing product exhibited by the primary seller in case 3 does not have the above-mentioned product warranty authentication attached at the time of exhibiting, so the authentication information transmission unit 31 functions when the primary listing product is exhibited by the primary seller in case 3. When the primary listing product is authenticated by the guarantor, the information registration unit 33 stores the authentication information in the information storage unit 21.

The reference price information providing unit 35 provides information about the reference price from the guarantor to the secondary seller. The reference price may be registered in advance by the guarantor, or the guarantor may register the reference price in response to an inquiry from the secondary seller.

<Flowchart>
[Case 1 (When the primary seller is the product manufacturer)]
The flow of primary listing and secondary listing in case 1 (when the primary seller is a product manufacturer) will be described using the flowcharts in Figures 2 and 3. In Figures 2 and 3, the performers are divided into rows for the primary seller, the operator of the product sales system 1, the consumer (purchaser) of the primary listed product (=secondary seller), and the consumer of the secondary listed product from the top, and each step to be executed is arranged.

First, the flow of primary listing will be explained using Figure 2. The manufacturer of the product, who is the primary seller, registers the listing using the primary seller terminal 3A. Since the manufacturer is listing the product, authentication of the product warranty is also performed at this point (step ST001). When registering the listing, the primary seller uses the primary seller terminal 3A to input information that identifies the product and the product's condition, and also attaches photographs, etc., if necessary.

When an item is registered, it is assigned a product ID that identifies it, and the operator of the product sales system 1 checks whether the listing details are appropriate (step ST002). If there are no problems, the item is displayed in the buying and selling market as a primary listing item, waiting for a demander (purchaser) to appear. At the same time, the operator issues an identifier IC, and upon receiving the identifier IC, the primary seller affixes the identifier IC to the item (see Figure 4).

When a consumer appears and offers to purchase the product (step ST003), the operator checks the purchase details and places an order with the primary seller (step ST004). The primary seller, who receives the order, checks the order details (step ST005) and takes steps to send the product (step ST006). When the product arrives, the consumer checks the product (step ST007), and if there is no problem with the product, proceeds with payment of the purchase price (step ST008). If there is any problem, proceeds with return procedures (step ST009). When the payment procedure for the purchase price is completed, the operator checks the payment (step ST010), and if there is no problem with the amount, etc., deducts a portion of the payment as a commission and then proceeds with payment procedures to the primary seller (step ST011). If there is a problem, the operator contacts the consumer so that the purchase price is correct and encourages payment (step ST012 → step ST008). When the primary seller checks the payment of the purchase price, the transaction of the primary listed product is completed (step ST013).

Next, the flow of secondary listing of the same product will be explained using FIG. 3. In this case, the secondary seller is the consumer (purchaser) of the primary listed product. The secondary seller uses the secondary seller terminal 3B to register the listing (step ST014). Since the product is given an identifier IC that was given at the time of the primary listing, the secondary seller reads the identifier IC using the secondary seller terminal 3B as shown in FIG. 5 (A), and the details of the product are read from the information storage unit 21 and displayed on the display screen 17C. This provides almost all the information necessary for listing, so the secondary seller can easily list the product by simply setting the condition and price of the product (FIG. 5 (B)). When deciding the price of the product, the secondary seller may refer to the price presented by the reference price information provider 35.

When the listing is registered, the operator of the product sales system 1 checks whether the listing details are appropriate (step ST015), and if there are no problems, the product is posted as a secondary listing product in the buying and selling market, waiting for a consumer to appear. When a consumer appears and offers to purchase the product (step ST016), the operator checks the purchase details and places an order with the secondary seller (step ST017). The secondary seller who receives the order checks the order details (step ST018) and takes steps to send the product (step ST019). When the product arrives, the consumer checks the product (step ST020), and if there are no problems with the product, they take steps to pay the purchase price (step ST021), and if there are any problems, they take steps to return the product (step ST022). When the payment procedure for the purchase price is completed, the operator checks the payment (step ST023), and if there are no problems with the amount, etc., they deduct a portion of the payment as a fee and then take steps to pay the secondary seller (step ST024). In this embodiment, at this time, a portion of the purchase price is also paid to the primary seller as a "revenue share". If there is a problem with the consumer's payment, the consumer is contacted and prompted to make payment so that the purchase price is correct (step ST025 → step ST021). Once the secondary seller confirms that the purchase price has been received and the primary seller confirms that the revenue share has been received, the transaction of the secondary product is complete (steps ST026 and ST027).

If a consumer of a secondary listed product relists the product, the secondary listing will again follow the flow shown in Figure 3.

[Case 2 (When the primary seller is a sales agent of the product)]
The flow of primary listing and secondary listing in case 2 (when the primary seller is a sales agent of the product) will be described using the flowcharts in Figures 6 and 7. In case 2, the primary seller is a sales agent of the product, and in Figures 6 and 7, the executers are divided into rows from the top: manufacturer, primary seller, operator of product sales system 1, consumer (purchaser) of the primary listed product (= secondary seller), consumer (purchaser) of the secondary listed product, and each step to be executed is arranged.

In case 2, the primary seller is a sales agent for the product, and performs the primary listing at the request of the manufacturer. Except for the difference in the manufacturer and primary seller, this is almost the same as case 1, so in Figures 6 and 7, the parts that are common to case 1 are just steps that are 100 greater than the steps in the flowcharts of Figures 2 and 3, and their explanations are omitted.

As shown in FIG. 7, in case 2, in the sale and purchase of secondary exhibited goods, the operator completes the payment procedure for the secondary exhibitor and pays a portion of the purchase price to the primary exhibitor (step ST124). After the primary exhibitor confirms the payment (step ST127-1), it pays a portion of the payment to the manufacturer (guarantor) as a "revenue share" (step ST127-2). The primary exhibitor's share is determined by a contract between the primary exhibitor and the manufacturer.

To prevent the primary seller from forgetting to pay the revenue share, for example, when the operator confirms the payment in step ST123, the operator may also notify the manufacturer of the fact that the secondary listed product has been sold and a sales report. In this way, the manufacturer will be able to confirm the revenue share with the primary seller.

If a consumer of a secondary listed item relists the item, the secondary listing will again follow the flow shown in Figure 7.

[Case 3 (When the primary seller is a product seller)]
The flow of primary listing and secondary listing in case 3 (when the primary seller is a sales agent of the product) will be described using the flowcharts in Figures 8 and 9. In case 3, the primary seller is a sales business operator of the product, and in Figures 6 and 7, the performers are divided into rows from the top: manufacturer, primary seller, operator of the product sales system 1, consumer (purchaser) of the primary listed product (= secondary seller), consumer (purchaser) of the secondary listed product, and each step to be performed is arranged. In Figures 8 and 9, the parts common to case 1 are represented as steps obtained by adding 200 to the steps in the flowcharts in Figures 2 and 3, and the parts common to case 2 are represented as steps obtained by adding 100 to the steps in the flowcharts in Figures 6 and 7, and their explanations will be omitted.

In case 3, the primary seller is a seller of the product and has no direct relationship with the manufacturer. Therefore, at the time of the primary product listing, the product does not have a product warranty certification. Therefore, in case 3, when the product is registered for listing in the primary listing (step ST201), the fact of listing is notified to the manufacturer for certification based on the information on the product manufacturer entered by the primary seller, along with confirmation by the administrator (step ST202-1) (step ST202-2). If certification is received, the administrator issues an identifier IC, and the same process follows (as in case 2, the manufacturer can receive a revenue share in the case of secondary listing (step ST227-2)). If certification is not received, the manufacturer has no right to receive a revenue share, but is not directly obligated to provide a product warranty under this system.

If a consumer of a secondary listed item relists the item, the secondary listing will again follow the flow shown in Figure 9.

〔others〕
In any of the cases 1 to 3, if you are trying to secondary list a product whose product warranty has expired or whose identifier IC has been lost, destroyed, or damaged, you cannot secondary list the product using this system. Therefore, in such cases, you will need to primary list the product again in accordance with case 3.

If a consumer (purchaser) wishes to receive a guarantee from the guarantor for a product, the consumer can use the consumer terminal 3C to read the identifier IC affixed to the product and find out the contact information of the guarantor.

The above embodiment is described as an example, and the present invention is not limited to this embodiment as long as it does not deviate from the gist of the invention.

According to the present invention, after a sale transaction of a secondary listed product is completed, information about the completed sale transaction is provided to the primary seller, thereby informing the primary seller of the existence of the secondary listed product and allocating a portion of the purchase price to the primary seller, thereby making it possible to provide a product sales system, a product sales method, and a product sales computer program that can suppress a decline in the primary seller's motivation to provide services for the secondary listed product.

REFERENCE SIGNS LIST 1 Product sales system 3 User terminal 5 Management server 7 Communication unit 9 Input unit 11 Data storage unit 13 Control unit 15 Display control unit 17 Display screen 19 Communication unit 21 Information storage unit 23 Control unit 25 Display data transmission unit 27 Buying and selling transaction execution unit 29 Allocation execution unit 31 Authentication information transmission unit 33 Information registration unit 35 Reference price information provision unit

Claims (10)

A system for selling products, comprising:
an information storage unit that stores at least information on a primary exhibitor who initially distributes the commodity in the trading market as a primary exhibited commodity and primary exhibit information including details and price information on the primary exhibited commodity, and secondary exhibit information on a secondary exhibitor who distributes the commodity that has been distributed in the trading market as the primary exhibited commodity in the trading market as a secondary exhibited commodity and secondary exhibit information including details and price information on the secondary exhibited commodity;
a display data transmission unit that transmits display data for displaying at least the content and the price information included in the primary listing information and the secondary listing information on a display screen of a consumer's communication terminal;
a buying and selling transaction execution unit that executes a buying and selling transaction of the primary exhibited product or the secondary exhibited product via a communication terminal of the consumer;
a distribution execution unit that, after the sale and purchase transaction of the primary exhibited product or the secondary exhibited product is completed, provides information of the completed sale and purchase transaction to the primary exhibitor and executes a procedure required to distribute a portion of the sale and purchase price of the secondary exhibited product to the primary exhibitor;
The information storage unit further stores guarantee subject information regarding a guarantee subject that directly or indirectly provides a product guarantee for the primary exhibited product that the primary exhibitor has primarily distributed, and authentication information regarding whether the guarantee subject is authenticated to directly or indirectly provide the product guarantee for the primary exhibited product,
The distribution execution unit is a product sales system that executes the necessary procedures to distribute a portion of the purchase price of the secondary listing product to the primary seller after the purchase and sale transaction of the secondary listing product for which the product warranty has been certified is completed . The primary seller is a manufacturer of the product, a sales agent of the manufacturer, or a distributor of the product;
The product sales system according to claim 1 , wherein the secondary seller is a purchaser of the product. an authentication information transmission unit that transmits the primary exhibition information of the primary exhibition product that has not been authenticated by the guarantee entity to a communication terminal of the guarantee entity so that the guarantee entity can authenticate the primary exhibition information;
The product sales system according to claim 1 , further comprising an information registration unit having a function of storing, in the information storage unit, the authentication information for the primary exhibited product authenticated by the guarantor. The product sales system according to claim 1 or 3 , wherein the authenticated primary listing products and the authenticated secondary listing products are provided with identifiers indicating that they are the authenticated products. The product sales system according to claim 4 , wherein the identifier is a two-dimensional code. A product sales system as described in claim 4 or 5, wherein when the identifier is read by a communication terminal, the display data transmission unit reads out the contents of the product to which the identifier is assigned from the information storage unit and transmits the display data for displaying the contents on a display screen of the communication terminal. The product sales system according to claim 1 , further comprising a reference price information providing unit that provides information about a reference price from the guarantee entity to the secondary seller. the information storage unit stores data regarding expiration dates of the product warranties for the primary exhibited products and the secondary exhibited products;
The product sales system of claim 1, wherein the display data transmission unit, if there is any remaining product warranty period for the primary listed product and the secondary listed product, transmits the remaining product warranty period in the display data. A method of selling a product, comprising:
an information storage step for storing at least information on a primary exhibitor who first distributes the commodity in the buying and selling market as a primary exhibited commodity and primary exhibit information including details and price information on the primary exhibited commodity, and secondary exhibit information on a secondary exhibitor who distributes the commodity that has been distributed in the buying and selling market as a secondary exhibited commodity in the buying and selling market as a secondary exhibited commodity, and secondary exhibit information including details and price information on the secondary exhibited commodity;
a display data transmission step of transmitting display data for displaying at least the content and the price information included in the primary exhibition information and the secondary exhibition information on a display screen of a communication terminal of a consumer;
a buying and selling transaction execution step of executing a buying and selling transaction of the primary exhibited product or the secondary exhibited product via a communication terminal of the consumer;
an allocation execution step of, after the sale and purchase transaction of the primary exhibited product or the secondary exhibited product is completed, providing information of the completed sale and purchase transaction to the primary exhibitor and executing a procedure required to allocate a portion of the sale and purchase price of the secondary exhibited product to the primary exhibitor ;
The information storage step further includes storing guarantee subject information regarding a guarantee subject that directly or indirectly provides a product guarantee for the primary exhibited product that the primary exhibitor has primarily distributed, and authentication information regarding whether or not the guarantee subject is authenticated to directly or indirectly provide the product guarantee for the primary exhibited product;
In the allocation execution step, after the sale and purchase transaction of the secondary product for which the product warranty has been certified is concluded, a portion of the purchase and sale price of the secondary product is allocated to the primary seller . A computer program for selling products that is installed and executed on a computer,
an information storage unit that stores at least information on a primary exhibitor who initially distributes the commodity in the trading market as a primary exhibited commodity and primary exhibit information including details and price information on the primary exhibited commodity, and secondary exhibit information on a secondary exhibitor who distributes the commodity that has been distributed in the trading market as the primary exhibited commodity in the trading market as a secondary exhibited commodity and secondary exhibit information including details and price information on the secondary exhibited commodity;
a display data transmission unit that transmits display data for displaying at least the content and the price information included in the primary listing information and the secondary listing information on a display screen of a consumer's communication terminal;
a buying and selling transaction execution unit that executes a buying and selling transaction of the primary exhibited product or the secondary exhibited product via a communication terminal of the consumer;
a distribution execution unit that executes a procedure required to provide the primary exhibitor with information on the completed sales transaction after the sales transaction of the primary exhibited product or the secondary exhibited product is completed and to distribute a portion of the sales proceeds of the secondary exhibited product to the primary exhibitor is realized within the computer ;
The information storage unit further stores guarantee subject information regarding a guarantee subject that directly or indirectly provides a product guarantee for the primary exhibited product that the primary exhibitor has primarily distributed, and authentication information regarding whether the guarantee subject is authenticated to directly or indirectly provide the product guarantee for the primary exhibited product,
The allocation execution unit is a computer program for product sales that executes the necessary procedures to allocate a portion of the purchase price of the secondary listing product to the primary seller after the purchase and sale transaction of the secondary listing product for which the product warranty has been certified is completed .

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