MacMall offers the 9.3-oz. Buffalo MiniStation 1TB Portable Thunderbolt / USB 3.0 External Hard Drive, model no. HD-PA1.0TU3, for $179.99 with free shipping ($0.18/GB). That's $20 under our mention from three weeks ago and the lowest total price we could find by $8. This portable hard drive is bus-powered; it doesn't require an external adapter.