Check off the completed & sold items menu on an ebay search and you may find similar items sold. Another cheap and quick option is to pick up a Beckett sports card price guide. Back issues are half off at SCP ($5+tax). Full newstand price for new issues is $10 +tax, so if you have a collection that isnt really newer stuff, I'd say a back issue is fine instead.
Well it depends on what year it was made or if its an autograph or a relic card
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