It's been available in Japan for a little while now, and it looks folks over here will finally be able get a standalone 250GB hard drive to breath some new life into their Xbox 360 as well. First revealed on the Xbox 360 Dashboard, Microsoft has now come out and confirmed that the drive will cost $129.99, and says that it should be available at retailers starting today (although Amazon is only listing an in-stock date of March 28th). And, yes, it does come with a transfer cable -- that's it next to the drive in the image above.