Toshiba HDTC610XS3B1 Canvio 1TB USB 3.0 Portable Hard Drive (Silver) for $64.99 shipped after promo code 16570.  Here is a screenshot for your reference.  This portable hard drive features a 8MB cache buffer, and USB 3.0 interface with up to 5 Gbps data transfer rate.  Most places have it for about $86 or more.