Various items are sold through the Internet 10 which contains a site computer 20, vendor computers 30a, 30b, factory computers 40a, 40b, dealer computers 50a, 50b, and user computers 60a, 60b, 60c. General users access to the site computer 20 to purchase items dealt in by vendors belonging to various countries using the user computers 60a, 60b, 60c connected to the Internet 10. When the site computer 20 accepts an instruction of purchasing physical items, the site computer 20 instructs the vendor computers 30a, 30b in various countries to send out the physical items to the general users. Download items which can be downloaded are downloaded from the site computer 20 to the user computers 60a, 60b, 60c. When the vendor does not have the physical items in stock, the site computer 20 instructs the factory computers 40a, 40b to make and send out the items. The site computer 20 can be accessed from a dealer computer for purchasing items.