OfficeMax offers the Hitachi Life Studio 500GB Portable USB 2.0 External Hard Drive, model no. 0S02696, for $54.99. Coupon code "SAVEATHON" drops it to $43.99. Pad your order over $50 to qualify for free shipping; otherwise, shipping adds $7.95. Excluding the cost of padding, that's $0.09/GB and the lowest total price we could find by $14. Sales tax is added where applicable. This drive runs at 5400 rpm.