Yes but he seems to have stated why, he owns the knife and can do whatever he wants with it, and he can sell to whomever he likes, for whatever price he sets, for whatever reasons he sets it.He changed the price and wanted funds for shipping on top of it. Please read the posts, it had nothing to do with extra shipping costs.
I am sure of one thing though, both of you are behaving somewhat childishly for a knife deal that never happened.
It is his knife and his sale, until he takes reciept of funds. He seems to have communicated fairly clearly that he was only willing to sell it CONUS only for the reduced price. I would have moved on if I were in your position and if I were in his i just would have told you CONUS sales only and left it at that.
IMO this could have been handled better by both of you guys across the board.