I have been looking around at Hobbypartz and the other NitroRCX, but they don't have all of the same items as HC. Some of the electronics are the same, and some of the prices are slightly better. When you factor in shipping, some items may be cheaper from them. But I dont see the same batteries that HC carries, and I don't see nearly as many products. HC gives much more information about their products too. A discussion forum for their products is right there on the site. I'm not one to send my money somewhere else when I could get it right here, but I don't see any comparison here.