HP Home & Home Office Store offers its HP Pocket 500GB Portable USB 2.0 External Hard Drive, model no. BK241AA#AC3, for $78.74. Coupon code “ACCS73419” cuts it to $66.93. With free shipping, that’s $0.13/GB and the lowest total price we could find by $26, although we saw it for $2 less in April. Sales tax is added where applicable. It comes with a carrying case.