Walrus

From Thikipedia

A Walrus, or a Walrush is a serial Wallmart shopper with little or no control over their addiction, A synonym of this is Martian. Walruses have been known to attack when their low prices & great range are threatened.

A depleteion in the Walrus population has come about through the foreign introduction of IKEA

the technical term is Walmart Rusher, which in time has become Walrush, and now Walrus.