Western Digital Outlet offers the Western Digital My Book Elite 2TB USB External Hard Drive, model no. WDBAAH0020HCH-NESN, for $109.99 with free shipping ($0.05/GB). That’s the lowest total price we could find by $41, although we saw it for $20 less in June (since expired). This drive purports to consume 30% less energy than the average drive, and features 256-bit hardware based encryption.