Staples offers the Seagate FreeAgent GoFlex Desk 2TB USB 3.0 External Hard Drive in Black, model no. STAC2000103, for $89.99. (Best Buy charges the same.) With free shipping, that’s $0.04/GB, tied with our June mention, and the lowest total price we could find by $7. Sales tax is added where applicable. This drive features a GoFlex Desk USB 3.0 adapter base, 5900 rpm spindle speed, 32MB cache, and more. It’s also compatible with USB 2.0 ports.