The old dredged up Anandtech article is referring to the price of 3.5" disks, but the 360 used something smaller, probably 2.5". An off-the-shelf laptop drive w

The old dredged up Anandtech article is referring to the price of 3.5" disks, but the 360 used something smaller, probably 2.5". An off-the-shelf laptop drive would've been a bit more expensive and a bit more comparable to the $99 that Microsoft was charging.