Anyone have a good site or method to find value in cards? I have a lot of scattered cards from the '80, '90, and '00 (baseball, football, basketball), along with complete sets of baseball Donruss '82, '83, '85, '86, and '87. I'm finally starting to go through them and want to savor the ones that do have some value for my kid when he gets older. I don't want to pay the ridiculous prices on Beckett. I tried a free site but they seem to base value on the average going prices on eBay. Any help would be appreciated!