I've never ordered from them, but they appear to be yet another place that orders container loads of stuff from overseas and then posts them on their web site. Much of what I saw fits into the "toy" category. The experiences of many people shows that this stuff typically doesn't last long.

Here are a few first hand reports:
http://www.rcuniverse.com/forum/fb.asp?m=5640880
http://www.rcuniverse.com/forum/fb.asp?m=5682369

I make it a habit to never buy from a place which does not list an address. I also don't usually buy from anyone who charges a restocking fee. Personally, I'd steer clear.