iTechHeads on 29 November 2014
Amazon is still taking orders for it at $399. They're restocking on December 2.
I'm guessing Amazon sold all of their GTA V Black Friday bundles and are waiting for the next shipment.
Unity bundle has been available since the beginning of the month so its not surprising that it didn't sell out. It's had 3 weeks for people to buy them and for Microsoft to do multiple shipments.
