If he didn’t want to sell to people with no feedback, he probably should have listed that in his ad. Some people may not want to sell such a big ticket item to a buyer with no verified successful transactions. The tax thing mentioned by @sls883 is also a concern to some people. My things are, no buyers:
- out of the USA
- who are using proxies, and
- with negative feedback
and I list those conditions in my ads.
You tried to give him reasonable options and he didn’t want to proceed. Just move on and look for another opportunity. In the old days, we used to suggest that newer buyers buy a couple of cables, records, footers or some other small ticket items, just to get on record with positive feedback. Good luck.

