Staples offers the Western Digital My Passport Essential 1TB Portable USB 3.0 External Hard Drive in Black, model no. WDBACX0010BBK, for $79.99 with free shipping ($0.08/GB). That’s $10 under our mention from two weeks ago and the best we’ve seen for this drive. (It’s a current low by $10.) Sales tax is added where applicable. The Essential series features 256-bit hardware-based encryption, automatic backup, and WD SmartWare software.