text: how do i find out how much my baseball/basketball cards are realy worth?  for free!? i have some vintage baseball/basketball cards that i am thinkg of selling.  i do not wanna get sc****d if they are worth money.  and am pretty sure that they are.  i have looked in a few places like online auctions and have a vague idea of what they are worth but i would like to have facts.  i would realy appreciate it if some one could help me out.  thanks www.beckett.com