Bought a "fully functional" Spotmatic from a "Platinum' eBay seller lsat year who supposedly sells a lot of cameras. Camera was wrapped in a too large a box "packaged" in a sheet of newspaper. I couldn't believe how shoddy it was packed. When I carefully removed the paper, the rewind crank fell off the camera and rolled on the ground. That Y thingy that attached to the film cassette dislodged inside the camera, and there was no way to open the back because the rewind crank was also used to unlock the back, screws to the Y thing-y, that was rattling inside the camera.
I complained to the seller about how it was packed and blamed his packing for the condition of the camera. We "had words" via email but I got a refund. I made sure the camera was packed exactly how it was sent to me when I returned it. Same box, same sheet of newspaper, wrapped precisely the same careless way...
When it was received by the seller he complained about how I packed it, and said the camera would have been salvageable had I packed it better!
Must say though, that was the only bad experience I had...