Less than 1 dollar.
A Fleer 1992 John Elway football tracing card is valued by most price guides at less than $1.00, however, if you found someone who collects John Elway cards and your card would be in mint condition you may be able to sell such a card for as much as $2.00
Less than 25 cents.
Emmitt Smith
dunno5000$?
$7.00
$2.50
Even though it's Harlow's RC, it's worth less than 25 cents.
Nothing
30 cents
1.25
$100.00