Proficient billiards is legit. Scot is a good guy with a great reputation. If I were to sell to someone I may have doubtful, proficient billiards escrow would be the way. He's pretty much a trustworthy middle man. Buyer should pay for the service.
Looking to buy a Pre-cat 314 with a black collar, 5/16x14 thread for an old sneaky with a stainless joint. I would be looking to buy on that is still 12.75mm, but will entertain anything that is available.