Staples offers the Western Digital My Passport Essential 1TB Portable USB 2.0 External Hard Drive, model no. WDBABV0010BBK-NESN, for $79.99. With free shipping, that’s $0.08/GB, tied with last month’s mention, and the lowest total price we could find by $6. Sales tax is added where applicable. This drive features a 5400 rpm spin rate.