Abstract: A product return/replacement device performs return/replacement of products, the device having a computer and a printer. The computer is equipped with: a read unit that reads a return/replacement reception code that indicates that the consumer has made a return/replacement reservation; a communication unit that transmits the return/replacement code read by the read unit to an external return/replacement server, and receives from the return/replacement server a delivery code for managing the delivery status of the product; and a processor for causing the printer to print a label displaying the delivery code transmitted from the return/replacement serve. The consumer can affix the printed label to the product for return/replacement, and when the read unit has read the delivery code displayed on the label affixed to the product, the communication unit transmits the delivery code read by the read unit to the external return/replacement server.