1.5TB Seagate SATA Barracuda 7200RPM 32MB Cache Drive for $119.99 shipped. This is the biggest hard drive available today with a highly efficient 4-platter (375GB/platter) design. The biggest hard drives usually require a premium, and yet at this price, it is among the most cost-effective per GB. Seagate drives come with 5 years of warranty, the longest available. (Originally posted on 11/25, this deal has been revised.)