It depends on the card itself. I've seen them sell at auction from anything between $1.00 up to $60.00. The $60.00 card was mounted on a nice plague for decoration though.
An authentic baseball card is worth anywhere fron $250.00 to in the thousands. You need to consult an experts to appraise the jackie Robinson card to see its true value. His cards are not that rare so it may not be too valuable.
