Meritline offers the factory-refurbished Western Digital My Passport Essential 320GB 2.5" Portable USB 3.0 External Hard Drive in Midnight Black, model no. WDBACY3200ABK, for $45. Coupon code "MLCK114PNL1" cuts it to $39.99. With free shipping, that's $0.12/GB, tied with our June mention, and $5 under the lowest total price we could find for another refurb. It features an 8MB cache, maximum data transfer rate of 5Gb/s, and backward compatibility with USB 2.0. A 180-day Western Digital warranty applies. Coupon expires after 100 uses.