Could end up being wrong but I don't see Best Buy's GCU program impacting Walmart/Amazon "too" much as it requires a $60 buy-in. So unless you're buying quite a few games each year, the savings won't amount to much if any. That's assuming they go off of the "Average person buys 1-2 new games or whatever a year" statistic. Can't remember where I read it but eh. All I know is I personally don't buy nearly enough new games to make the buy-in price worth it to me compared to buying used at Gamestop. Even with their used prices I usually find them cheaper at Gamestop even without the pro membership and would need to buy many games at Bestbuy before breaking even. To each their own of course.