Western Digital Store offers its factory-refurbished Western Digital 4TB My Book USB 3.0 External Hard Drive, model no. WDBFJK0040HBK-NESN, for $89.99. Coupon code "WDDNEWSJULY" cuts that to $76.49. With free shipping, that's $24 under our April refurb mention, $52 less than you'd pay for a new one today, and the lowest total price we've seen for any Western Digital 4TB USB 3.0 hard drive in any condition. It features local and cloud backup and up to 5Gb/s data transfer speeds. A 6-month Western Digital warranty applies.
Of note, it's also available for Mac for the same price via the above coupon. Both deals end July 31.