Western Digital Outlet offers the factory-refurbished Western Digital My Passport Essential 500GB Portable USB 2.0 External 2.5" Hard Drive in Black, model no. WDBAAA5000ABK-NESN, for $39.99. With $2.99 for shipping, that's $0.09/GB, $7 below our March mention of this refurb, and $37 under the lowest total price we could find for a new unit today. Sales tax is added where applicable. This 5,400 rpm drive has an 8MB cache. A 6-month Western Digital warranty applies.