BestBuy is offering 50% trade in bonus for xbox one and ps4 games this week (7/17-7/23). If you are a GCU member you will get an additional 10% credit bonus.
Grand Theft Auto V [bestbuy.com] (PS4 or Xbox One) goes for $37.50 TIV in GC. If you are a GCU member you will get $40 after the 10% credit.
This matches our previous front page offer from 2 months ago