Abstract: Electronic bartering systems and methods are described. Methods are described for completing a transaction by use of a national currency and a mutual currency. Items offered on the system may be classified as for barter or reward. In embodiments, an item offered on the system may have a listing price ($P) specified in the national currency and a minimum amount of national currency desired by the seller ($X) specified in the national currency. In some embodiments, the system has a maximum barter to cash ratio (%C) such that the item is classified for reward if $X/$P>%C.