In practical terms, this is an unsolvable problem. If there’s money to be had, someone will be there to have it… The world is full of assholes. Reporting this one piece of shit will do absolutely nothing in the grand scheme of things as even if he gets shut down another will simply pop up in the vacuum of his absence. It’s frustrating, and obnoxious, but there’s really nothing you can do to stop it.
I would, however, be all for exposing who this person is (especially if he’s a member of this site, and I think that’s likely). If he sells on eBay, or accepts Paypal, nabbing his personal details shouldn’t be difficult. I’m always game for a good public shaming. We can strip him naked and march him through the streets - really ring the shame bell the whole time just like Game of Thrones. Everyone will see his beaver, his full wonderful beaver.
That sounds a lot like doxxing, and I’m not cool with that. And it opens a whole can of potential legal worms I’m sure Jay doesn’t need or want. It wouldn’t help identifying if they were a member here to begin with.