Know what you're getting into. If you know, then you'll have a good time.
Some of this stuff is poorly packaged from China. It is likely a knockoff product in that case, and will probably not be the best quality. So keep that in mind.
Memory, blank media, cables, even helicopters? All great experiences so far.
Iphone cases? Sort of cheap, but the cost is so low on some of them, who cares?
I've Never had anything odd come from california. So if it's coming from the states, then don't worry. If it's shipping international, just beware it May or may not be such a great deal.
Oh, I got some questionable toner from them for crazy cheap too and it turned out great.
Also great for funny stocking stuffers. Expect half of them to be iffy though.