AI is only as good as your data set. Even looking at PSA "sold" prices on cards you'll find autograph graded lumped in with regular cards and for some reason cards that aren't even the card you're supposed to be looking at.
For example...PSA 3 "auction prices realized" for 53 Topps Satchel Paige has a couple Pokemon cards on Page 1 of the recent returns...and this is a common issue across many cards.
https://www.psacard.com/auctionprice...ige/179278?g=3
That should be a nice mess all around if they train on that data.