I seen a real good video about this but I can’t find it back .
Apparently there’s people trying to get 1989 upper deck Griffey’s in all grades .
And since the population is low for PSA 1 PSA 2 PSA 3s etc- they bring more money than a PSA 7 (about $45)
Here’s a link to a PSA 2 That sold for $516.55
https://www.ebay.com/itm/1989-Ken-Gr....m43663.l10137