Used 7900xt a good deal for 400 USD?

Saw a listing on Marketplace for this 7900xt at $500, I talked him down to $400. He mentioned that there was a problem where the the screen go black for very short periods of time randomly, which sounds like driver / settings issue but I'm not sure. He claims he used it for less than a month before getting annoyed with the issue and wanting to get rid of it. We already agreed to meet up and buy it as I feel like this is a pretty solid deal but I figured I'd ask on here before I meet him tomorrow.