Nice! Though for older hardware it would be nice if the price reflected the current second hand market (harder to get data for, I know). Eg. Nvidia RTX 3070 ranks as second best GPU in tok/s/$ even at the MSRP of $499. But you can get one for half that now.
Great idea - I've added it by manually browsing ebay for that initial data.
So it's just a static value in this hardware list: https://github.com/BinSquare/inferbench/blob/main/src/lib/ha...
Let me know if you know of a better way, or contribute :D