To provide a system capable of easily comparing selling conditions in plural outlet stores and more easily providing the information of the outlet store, where a desired article can be purchased on desired conditions, to user.

The outlet store 30 registers information such as price, delivery period and presence/absence of free dial (R) for each article in a outlet stored introducing server 20. A user 40 accesses the outlet stored introducing server 20, designated the article and a selection reference and requests the retrieval of the outlet store. The outlet store introducing server 20 retrieves the outlet store information of that article, sorts the information in order matched to the reference of the user 40 and transmits the information to the user 40.