Fry's Electronics offers the Hitachi Deskstar 5K3000 3TB Serial ATA 6Gb/s 3.5" Internal Hard Drive, model no. 0S03228, for $117 with free shipping ($0.04/GB). That's the lowest total price we could find by $31 and the least expensive shipped 3TB SATA internal drive we've ever seen by $3. (We saw one for $7 less in April, but only with in-store pickup.) Sales tax is added where applicable. It runs at 5400 rpm and features a 32MB cache.

Update: This item is no longer available for shipping; however, you can still opt for free in-store pickup.