While there are no U.S. Toys R Us Outlet locations, there is one located in Vaughan, Ontario in Canada. It offers the usual retail products of dolls, games, and other toys, but at greatly reduced prices (usually 30-50% off). They don't carry everything that the retail stores offer, but mainly have discontinued items and overstocks - but the supply is still huge.
Toys R Us Outlet Store (the only one in North America)
Vaughan Mills Outlet Mall
1 Bass Pro Mills Drive