Duke signs a lot, but depending on the card, i would venture anywhere from 15-25 dollars.
Also, it's Snider.
[list]Classic Jerry Colmanisms
[*]"Montreal leads Atlanta by three, 5-1."
[*]"They throw Winfield out at second, but he's safe."
[*]"Johnny Grubb slides into second with a standup double."[/list:u]