Adorama via eBay offers the Western Digital 500GB Elements SE USB 3.0 Portable Hard Drive, model no. WDBPCK5000ABK, for $49.99 with free shipping. That's $0.10/GB and the lowest total price we could find by $7, although we saw it for $10 less via a mail-in rebate four weeks ago. It features a maximum data transfer rate of 5Gb/s.