A gift-valuable article exchange assisting device includes a control
section which, when a receiver decides that a gift belonging to the
receiver is unwanted to the receiver, determines whether the gift can be
exchanged to a valuable article belonging to a delivery person based on
an exchangeable article information database. The control section also
calculates a predetermined service charge when it is determined that the
exchange is possible, and decides a valuable article, to which the gift
is actually exchanged, equivalent to a value obtained by subtracting the
service charge from a value of the gift based on exchange conditions
between the gift and the valuable article.