Two questions then IF any of those are member watches in that pic, even if they are en route back to the owners as stated.
1. Why would one post counterfeit replica watches for sale on a non-replica Internet forum, especially one as mainstream as Bacefook? Not a gen watch forum, but still questionable choice and shows probable intent to deceive.
2. Why would one post a group shot of other members' property in a for sale ad anywhere? If to just stimulate interest and queries but only one or two are actually his property in the pic that he planned to actually sell, that is a shady used car salesmanship type of tactic IMO. You know, the old "don't have that one you asked for, but boy do I have a deal for you on this one..." Again, questionable choice and shows probable intent to deceive.
Neither of these two questions come to any answer that I can think of that is above board IMO.