Newegg via eBay offers the Seagate 2TB Backup Plus USB 3.0 Portable Hard Drive in Silver, model no. STDR2000101, for $79.99 with free shipping. That's $19 below last month's mention and the best price we've seen. (It's a current low by $8.) This drive is compatible with Windows and Mac and features an 18" USB cable and pre-loaded backup software.