There's a decent bit of moderation and community vetting that goes thru on watchexchange. Have bought and sold stuff on there with no issues at all. The community is definitely enthusiast driven though, there's a lot more buyer's privilege than any other marketplace. They will balk at most people trying to move new Rolex or Tudor. Knowledge of vintage pieces is almost non-existent there and I've seen horrible redialed Omegas get 100 upvotes. The most luck you'll have buying/selling on there would be 'entry-level' pieces between $500-$2500.
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