Buy.com via eBay offers the Seagate Backup Plus 1TB Portable USB 3.0 External Hard Drive in Black, model no. STBU1000100, for $69.99 with free shipping ($0.07/GB). That's $14 under our February mention and the lowest total price we could find by $17. This drive is compatible with Windows and Mac and features a USB 3.0 adapter, 18" USB 2.0 / 3.0 cable, pre-loaded backup software, and more. Deal ends March 12 at 11 am ET.