Get 250GB Xbox 360 Slim hard drive for $55

Update: As pointed out in the comments, this is not an officially licensed Microsoft hard drive. It is manufactured by AGPtek, and appears to sell for around $59.99 on Amazon. We apologize for the confusion.
Original post: Quick! has 250GB Xbox 360 Slim hard drives on sale for $54.99, cut down from its usual $129.99 price tag.