Are there still any hidden gem gpu's left?

you read about gpu's like the Tesla P40, V100, AMD M150 etc that people pick up for cheap. probably many others as well. Most are either server gpu's being phased out or mining discards, right?

The problem of course is that whenever someone discovers these, they then make a youtube video about it so they can cash in on the views, and as a result the price jumps up 4x instantly.

I realize the irony of asking given the above, but are there actually any feasible options now, eg for 24GB? or is the best bet still AMD (due to Nvidia inflation)? is Intel support improving?