Western Digital Store offers the factory-refurbished Western Digital 1TB My Book Essential USB 3.0 External Hard Drive in Black, model no. WDBACW0010HBK-NESN, for $49.99. Apply coupon code "OUTLET13" to bag free shipping. That's $0.05/GB and tied with our mention from last week as the lowest total price we've seen. (It's $57 under the best price we could find for a new unit.) 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.