Seagate 1TB USB 2.0 External Hard Drive for $86.39 shipped after coupon code EMCHDD15. Here is a screenshot for your reference. Note that this drive comes with a 5-year manufacturer warranty. As a comparison, Best Buy has it for $149. For a 1TB external drive with both eSATA and USB ports, check out this deal.
Originally posted earlier, this deal has been revised.