I see them offered from different places for varying prices. Are they all the same? It looks like they are all being imported from China. SoCalGarage is more expensive than other places, by quite a bit, but have a sale going on now and I am trying to decide if I should go on and buy. There's other stuff I should probably do first but if the one's from SoCal are better somehow I might as well save a couple hundred bucks while I can. Thanks.