As a vendor who lost out big time due to Sheep and then TorMarket, I am not too fond of selling stuff on any site that doesn't have serious safeguards against the admins running off with all the BTC. "xyz seems trustworthy" doesn't count. I know The Marketplace has multi-signature escrow but are there any other that are also implementing it or some other similar / comparable safeguard?
I would hope that by one trying to implement this type of feature it would create pressure for the others to do so.
The guy who just opened the Vault43 said he's going to implement this kind of escrow