I would rather lose a few bucks and sell to a good buyer who won't cause problems then deal with returns, picky feedback, or a person just being a total pain in the ass and causing stress for me. It's like when people say you can make more money selling on Amazon. Not really. Sometimes you do, but then it's offset by the fact that you can't block buyers so you're guaranteed to run into scammers, liars, and idiots who end up causing you to lose money. I also hate selling to collectors because they're often total socially inept jerks who make up problems in order to get partial refunds. The good thing is that collectors in my experience usually ask really annoying questions before buying and I can check their feedback. In my experience "collectors" tend to leave lots of negatives and neutrals for petty reasons and when they do leave a positive it's usually backhanded so that's another good way to avoid people by just looking at the way they treat other sellers.