My most recent problem came out okay. I bought a 35mm lens for my Leidolf C-35, which is kind of hard to find that particular lens for. It had a dented filter ring, but since I know how to fix that , it was not a concern. The seller described it as in working order, so I went ahead with the transaction.
When it got here, I immediately set to fixing the dented filter ring. Took all of five minutes, and I thought "Well now I finally have a full kit". Whoa Nellie! Further inspection of the lens showed that it wasn't put back together properly, as the focusing ring was way off. And I couldn't get it apart because all the set screws had been snapped off.
So I contacted the seller (in Poland), requesting a refund, and I would send the lens back. After a couple of broken English messages later, they said they would send another lens. I took this to mean a replacement. Turned out they meant it as a parts donor. I again contacted them, explaining how I couldn't repair the one I originally got because of the reassembly damage from before, and then they agreed to refund my money after I returned the lenses. It all came out good, except for the postal fee I had to eat on the return. I did eventually get a lens, but from another seller. Luckily, I didn't have to escalate the issue, as I really hate doing that, and the sellers were nice enough to make an effort to rectify the situation with the parts donor. I probably would not have gone through all the trouble of handling it myself, but they are a camera shop, and I know how hard it can be these days to run one. I wouldn't hesitate to buy from them again if they had something I needed.
PF