I too have bought yards of stuff from Ebay over the years, of all different kinds. I've bought a few bits of camera stuff too, and haven't been disappointed by it.
Often the negative feedback amazes me - people paying less than a pound for something that would cost them £20 on the High Street, and then moaning that it's not the best quality.
Mind you, I've just spent £40 on a battery grip which I'm expecting to arrive any day now. I'll let you know if I got my first burn when it gets here..
Russ.