Maybe if they were selling a bridge with that.
But no, I wouldn't take that offer, because it sounds like it would be a massive con, and, in any case, illegal and a waste of money. Even if it wasn't any of these things, I still wouldn't take up the offer, because I decided that I wouldn't use a firearm for CTB if I had access to one, all due to ethical concerns (e.g., leaving a firearm unattended after the fact).