u look it up online
Depends on the card and the condition. A good place to start looking to find a value is eBay.
It matters who they are of and how old they are.
It depends what kind of cards you have stupid
im trying to find the value of my x-men cards
Value of a basketball card depends on the player, type and rarity. Current market value can be looked up on ebay's completed sales. Most common cards are probably worth very little.
the cards now value is about 900,000 dollars
I would like to find out what Troy Bell basketball cards are worth. #3 Grizzlies for memphis. Card number 229/499
i would suggest ebay
close to 90 dollars