newegg offers the Hitachi 4TB Touro Desk USB 3.0 3.5" External Hard Drive, model no. 0S03503, for $169.99 with free shipping ($0.04/GB; Fry's Electronics charges a buck less, but it's only available for in-store pickup.) That's tied with our December mention and the lowest total price we could find by $20. It runs at 7200 rpm and features a 64MB cache.