To solve the conflict-of-interest problems between upstream and downstream distributors.

A brand selection screen is displayed (S11), and then brand and shop selections are received (S12 and S13). If a purchaser selects a purchase order on an E-brand homepage (S14;Y), a merchandise selection screen is displayed (S15) to receive merchandise selection (S16). If the purchaser selects a shop (S14;N), a shop-specifying screen is displayed (S17) for receiving shop selections (S18). Subsequently, the merchandise selection screen is displayed (S19) to receive merchandise selection (S20), and payment method selection and shipping address selection are received (S21 and S22). In addition, a distribution source is determined, based on the state of merchandise stocks (S23), and a sales recording shop is specified, based on the purchase location and the distribution source (S24). Sales that are to be recorded in department stores and on directly managed stores are adjusted (S25).

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