I was lucky to buy a 1080 Ti for like 500$ off a miner a few years back. Bitcoin at that moment ended up cheap enough that GPU mining became unprofitable, and everyone was liquidating their farms.
I got one of those at retail price a few years ago and it's still one of the best cards out there in terms of video memory. I'd have to upgrade to a 3080Ti or 3090 to have it beat.
