| 摘要 |
In on-line shopping, the prices of commodities and/or services are differentiated according to the means of purchase each user can opt for and further promotion of the commodities and/or services is thereby made possible. When an order for a commodity is transmitted from a terminal 10 via an NSP 20 and the Internet 30, the NSP 20 via which the order has been transmitted is identified according to the transmitted IP address. The numbers of commodity buyers having ordered commodities via NSPs 20 are accumulated for each NSP in a database (not shown) in the company 40, and the commodity price is determined according to the number of users having bought commodities via the identified NSP 20.
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