WARNING! $20 credit is for the *AMAZON.COM* PSN store. It's not the complete PSN store-- Gravity Crash came out a week ago, but you still can't buy it from Amazon.
I would hate to be stuck with $20 that I can't spend on new releases.
The Best Buy deal gives you a $20 card for the *real* PSN, though you'll have to weigh the con of BB charging more for their qualifying games.
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