In the 1996 film Girl 6, Spike Lee's character repeatedly brings up baseball cards.
In one scene, he says he will collect over 1,000 1989 Ken Griffey Jr. Rookie Cards and sell them for $1,000 apiece.
Back in the late 80s, many people thought the same thing.
A raw copy of this card costs around $50, whereas a PSA 10 copy costs a little over $2,000.