1. A computer-implemented method of mapping input listings to consolidated listings, the method comprising: receiving a plurality of input listings from one or more sources, wherein the plurality of input listings comprise different item listing variants for a particular product; establishing, from the plurality of input listings, a group of input listings that share one or more common attribute values representing the particular product; determining via a computer processor, for the group of input listings, a single corresponding consolidated listing based on attribute values associated with the input listings in the group of input listings and attribute values associated with consolidated listings, wherein the determined consolidated listing represents the particular product; mapping each input listing in the group of input listings to the determined consolidated listing; storing each mapped input listing in a memory; and transmitting, to a client device associated with a user, for display, the consolidated listing rather than different item listings variants representing the particular product.