For in-store purchases only, Staples offers the Seagate FreeAgent GoFlex 500GB Portable USB 3.0 External Hard Drive, model no. STAA500105, for $49 ($0.10/GB) via this printable coupon. That's tied with our mention from two weeks ago and the lowest price we could find now by $20. Sales tax is added where applicable. This drive runs at 5400 rpm and features an 8MB cache. Coupon expires August 18.