By what I know, used current generation games at GS are like $5 less than new ones. In this case, yeah, there's no excuse for buying used.
This is the worst-case scenario that everyone talks about, but GS does sell used stuff for decent prices sometimes. Of course, it's totally outclassed by peer-to-peer marketplaces.
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"God Hand is the ultimate expression of the joy of humanity, specifically the punching part of the joy of humanity."-Shigeru Miyamoto