Abstract: A purchase record is accessed within a database of purchases. The purchase record includes a purchase date field and a purchase price field, respectively indicating a purchase date and a purchase price of a first item purchased from a seller by a purchaser. At a determination module located at a machine, a presentation delay interval is determined using the machine, the purchase date, and the purchase price. After expiration of the presentation delay interval, an advertisement is communicated to a device of the purchaser. The advertisement advertises a second item to replace the first item.