Amazon has added a large number of pre-order bonuses and exclusives this week as well as increasing the number of games offering pre-order bonus store credit
They are being far more aggressive in pricing/bundles with the 3G model and it's no wonder seeing as most people want to get the wi-fi only model instead. This dates back to when the air was sucked out of the room last year at E3 when Sony announced being partnered with AT&T.
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