Cheap wheels are sometimes fine for posing around on the street, however if you race on them, be prepared to possibly die or stuff it in the wall.
Having said that the number of fakes I see on the dyno that are basically buckled square from hitting tiny ruts in the road daily driving etc is frightening. There are no standards in this game of knock-off wheels, just the temptation to make them as cheap as possible to maximise margins. Thats the price some will pay for vanity.