You guys are missing the point. As a seller he has the absolute right to request any form of payment he wants.
The problem is that he didn’t keep his word. He accepted a wire transfer offer. We had a deal in place. He told me he would give me the wire information when I was on my way to the bank. He kept silent for 2 hours and advised me of the situation after I had taken leave from work and sat outside the freaking bank ready to wire the money!!!!