I've never seen an '89 UD Griffey or '90 Leaf Frank Thomas in mint condition I don't own. Those were the biggest cards of my youth and when I see one for $5-$10 I buy it. Probably own 20-30 of each. There's no explaining it, and it makes no sense, but whatever. The rest of you should probably seek therapy asap, lol! Step 1, give one away to a stranger