I don't have the exact data for an item like the crunchpad/joojoo, but for nearly everything I bothered checking, the price differences are quite often less than 25%.

Regardless of exactly how much this margin is, it is not wise for anyone to be straddling the fine line between the maximum consumers are willing to pay and the minimum a factory is willing to charge.

I leave it as an exercise to the doubters here to investigate by themselves. I am done wasting my time finding specifics just to further an argument on the internet.