Adorama Camera via eBay offers the Western Digital 1TB Elements 2.5" Portable USB 3.0 External Hard Drive, model no. WDBUZG0010BBK-NESN, for $54.99 with free shipping. That's the lowest total price we could find by $4, although we briefly saw it for $7 less two weeks ago. It provides data speeds up to 5Gb/s and is backwards-compatible with USB 2.0.