Sadly, I don't believe that most people have read Ebay's arbitration agreement. Regardless, ebay is still terrible. It IS great for exposure, but the risks that ebay itself has imposed on sellers is enormous, therefore negating the great exposure. Bottom line, if you're thinking of selling a pin on ebay, just don't. I'm not talking about the Nigerian scammers, I'm talking about dishonest buyers, and trust me, they outnumber the Nigerians by scores. When you consider all the sub-assemblies that make up a pin, the risk for someone being displeased is too large. Anything from playfield condition, to pop bumpers, to boards...well, you get the idea. Any one of these could be deemed "not as advertised" and guess what? You're out all your $$ until it is resolved.
Craigslist USED to be good, but the amount of no-shows, tire kickers and low-ballers (thanks to Pawn Stars on that last one), makes it impractical to use.
The latest one I've had pretty decent luck with is Offerup. Much, much better than LetGo, which is a joke. LetGo actually ENCOURAGES tire kickers.