Oww...
I only get the Vesrah gasket kits from them, myself, and once a bit of 'chrome' (plastic) trim for a tank edge. So far they have been real Vesrah kits. I ordered one of their ('generic'?) spark advancers about 4 years ago because someone here bought one and it didn't work right: since then I have seen 2 more. Each one had different springs on them(!), and none of them were correct, advancing far, far too soon on 2 of them and much later, but not full advance, on the 3rd one. I couldn't get the 3rd one to full advance as the engine it was in wouldn't rev past 5000 with it in.
However, the baseplates of all 3 were usable: I found that the post in the middle would fit the Honda advancer cam pretty well, so exchanging the bases worked out OK in the end, making the original rusted advancers re-usable after all. While they were cheap, if one considers I only used 1/2 of it, that made them about the normal cost?