yeah i had an A770; it should be ~$200-$250 now on ebay, lightly used. It's, in my opinion, worth about $200, if it's relatively unused. As i mentioned, it's ~= RTX 3060 at least for compute loads, and the 16GB is nice to have for that. But for a computer from the 4th gen i'd probably only get a A380 or A580; the A380 is $60-$120 on ebay.