An image generation system and contactless communication media, a method for selling commodities, and a complex store provide that the purchase of commodities can be considered based on actual commodities offered at shops and images including the use state of the commodities. The system includes a tag corresponding to a commodity, a portable terminal and an image generation device. The tag stores image information of the commodity, and transmits the image information to the portable terminal when the portable terminal approaches. The portable terminal receives the image information and outputs the received image information to an image generation device. The image generation device generates an image including the use state of the commodity based on the image information of the commodity outputted from the portable terminal, displays the image including the use state of the commodity generated.