Western Digital offers the factory-refurbished Western Digital My Book Essential 1TB USB 3.0 External Hard Drive 2-Pack, model no. WDBACW0010HBK-NESN, for $119.98. (Add two to your cart to see this price.) Coupon code "WDCARES" drops the price to $104.98. With free shipping, that's $52.49 per drive, $0.05/GB, and the lowest total per-unit price we've seen. It's also a current price low for a pair of new ones by $45. Sales tax is added where applicable. It features a maximum data transfer rate of 5Gb/s, is backwards compatible with USB 2.0, and includes an illuminated capacity gauge. A 1-year Western Digital warranty applies.