PURPOSE: A general company for an on-line sales promotion and sale agency is provided to supply a commodity for a consumer at low cost by supplying an on-line type business method for performing an effective marketing and business on an on-line. CONSTITUTION: An on-line sales promotion and sale agency general company supplies a web page or a web service capable of being accessed on the Internet(102). The web site is supplied by a server computer(100) of the general company. A bank or card company(112), which is cooperated with the general company, manages an account of a client, recognizes a credit state of the client, approves a transaction, and issues a credit card. A commodity provider(106), which is cooperated with the general company manufactures or distributes a commodity which was displayed on a shopping mall supplied by the general company and sold. A delivery company(108), which is cooperated with the general company, delivers a commodity sold through the shopping mall to a wanted destination. A client is a general user computer(104), which is connected to the Internet(102). A user connects to the server of the general company through the computer(104). The above systems are connected therewith through the Internet(102).
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