In early February Arron Greenberg was quoted saying that 250GB hard drives were unlikely to appear outside of Xbox 360 Elite bundles. Fast Forward a month later and it has now been confirmed that 250GB Xbox 360 hard drives will be available for a standalone purchase. The HDD’s are to be priced at $129 and are set to go on sale today. Many online retailers are not reporting Microsoft’s new hard drive option in stock, but be on the lookout if you are interested in purchasing one. Also be on the lookout for a slight decrease in price for the 120GB Xbox 360 hard drives. They are currently priced at $129 as well.
source: Joystiq