thats actually for vintage stuff, new stuff, is more of a hype market, if someone does good, cards go through the roof, just like with that gamestop sh!t, people buy it up and then it settles a little bit, generally lower than what it sold for...

but as i said earlier, Mantle isnt going to beat his child to death, or rape someone, so his legacy cant be tarnished, like say Aaron Hernandez... his cards were hundreds when he was playing, now is usually just wierdos that want them, and they dont sell for much either...