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Colington, NJ (WPHL)- Well, it might be a good time to check out any of the old sports cards you have around the house because the trading card business is booming.

New sports card stores are popping up, the Fishtown card show is this weekend, and one south jersey kid has created an app to tell you what your cards are worth. It’s called the COLLX app! Our Alex Butler went to Santiago Sports to check it out.