Silicon Power USA via Amazon offers the Silicon Power 1TB Rugged Armor A30 Portable USB 3.0 External Hard Drive, model no. SP010TBPHDA30S3K, for $59.99 with free shipping. That's $5 below our November mention and the lowest total price we've seen for this USB hard drive. (It's also a current low by $22.) This model passed the US military drop test (MIL-STD-810G).
Need it by Christmas? Orders placed via Prime by December 22 are guaranteed for Christmas delivery.