Gentlemen,
you misunderstand the M.O. here.
EBay does not allow the sale of counterfeit goods, so a seller cannot offer a replica for sale. But apparently a seller can say he bought this watch that was offered as a GEN to him but he wasn't able to verify this so he's selling it for peanuts now because . . . whatever.
It's a way to circumvent the eBay police being dispatched.