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GameStop [gamestop.com] is currently having a trade-in promotion, Get an additional 60% in-store credit when you trade-in 6 or more used games (70% for pro members.)

Deal Ends July 9th 7/9/2017

This deal can be exploited with GCU (or without) to more than double your investment.

6 Game Example:[list][*]PvZ:GW2: Xbox/PS4 – $ 20 ($ 16 /w GCU) [bestbuy.com]