Western Digital Outlet offers the factory-refurbished Western Digital My Passport Essential 500GB Portable USB 3.0 External 2.5″ Hard Drive in Black, model no. RWDBACY5000ABK-NESN, Blue, model no. RWDBACY5000ABL-NESN, or Silver, model no. RWDBACY5000ASL-NESN, for $49.99. With $7.99 for shipping, that’s $0.08/GB, and $14 under the lowest total price we could find for a new unit. (We did see a refurbished unit for $30 less last month, since expired.) Sales tax is added where applicable. It features both USB 2.0 and USB 3.0 connectivity. A 6-month Western Digital warranty applies.