If contractors don't use quality receptacles in the first place ( 40 cents apiece, residential quality ) what would make anyone think that they can get 20 bucks for one with a pig tail. That's more than the profit on a lot of new spec. homes. When the idea is to wire as cheap as possible ( trim that last dollar ), why add a device that adds to the cost with no real advantages. This device looks more like some of the fising lures that are meant to catch the fisherman and not the fish.