To easily obtain information (name, maker and brand name) on an article used in a Television broadcast even though it is unknown, and to purchase the article through a network.

A user terminal 10 has access to the terminal 20 of a information providing company, and has access to a homepage for the broadcasting program. A scene in the broadcasting program is reproduced from a picture displayed on the user terminal 10, and an article in which the user is interested is interested is searched. If the user wishes to purchase it, article purchase order information produced on the picture screen through the network 100 is transmitted to the server 20 of the information providing company. If the server 20 of the information providing company receives the purchase information, it requests for the article ordered to the server 40 of a sales store. The server 40 of the sales store instructs the delivery of the article requested from the server 20 of the information providing company to a delivery service server 50, and the delivery center ships the article to the user (person who ordered).