Microsoft has slashed $50 off the price of an Xbox 360 for the impending buying season with specially-marked 'Holiday Bundles'. Multiple retailers including GameStop, Best Buy, Amazon and Target are now stocking these new bundles with come in at $50 below their usual value.Numerous bundles priced at $249.99 include both 250GB and 4GB console options and a range of games and Kinect packages on offer. A $349.99 bundle includes the 250GB console, Kinect, Kinect Adventures, Carnival Games and three months of Xbox Live Gold access. There's no word on the duration of the offer, but we expect it'll span throughout the shopping season.