I've seen good, and I've seen bad. The one camera that I really got reemed on, just because I didn't want send it back and miss the chance of ever getting another one, was from a dealer that said it worked, but he didn't know much about cameras. I made sure to include that in my feedback for him, which has been the only negative feedback from me so far. I even gave decent feedback to the guy that didn't want to send me an item because I got it at his opening $0.99, and no one else bid on it (I had $10 on it), because I don't know his circumstances. He did ship it Priority Mail after eBay got in touch with him, so that counted in his favor.
But my latest aquisition, a Ricoh Super Ricohflex was a showroom gem when I took it out of the box. Unfortunately it was being sold by someone other than the original owner, so he did not know where the rest of the Color Back was. It did come with a comprehensive set of Walz filters, a BellView hood and case (which these are 36mm push on, very rare), a Ricoh B-300 flash unit, a functioning GE PR-1 meter in leather case, and all the instruction sheets and guarantee card for the camera and accessories. And the camera works beautifully. I'll get the first roll back on Monday to see how bad I messed things up (I felt like a total clutz operating it. Maybe next roll will be better).
So far it has been running 95% good / 5 % bad-to-neutral on my purchases, so I am at least ahead of the game.
PF