From the Toys Section:
Amazon offers the Seagate Barracuda 2TB Serial ATA 3Gb/s Internal Hard Drive, model no. ST320005N4A1AS-RK, for $79.99 with Free shipping. That’s $0.04/GB and the lowest price we’ve ever seen for this model. Sales tax is added where applicable. It runs at 5900 rpm and features a 32MB cache. Its Super-low power consumption reduces power costs over the life of the system up to 50% over those of standard desktop drives. Runs cooler and performs better than other drives in its category.
Buy two, hook yourself up with a 1Gb Ethernet D-Link DNS-321 2 drive NAS case for $93 and you’ll have a sweet 4TB Network Attached Storage setup for $253.