I have a brett favre rookie card with his name spelled wrong (farve) whats it worth ricem0408@yahoo.com?

well i have a card just like it. but it is of a different player. if brett favre goes into the hall of fame (which he will) it could boost up easily $100 in the regular price. so my prediction for the price of the card when he is retired, and in the hall of fame is approximately $750