B&H Photo Video offers the Western Digital 4TB My Book USB 3.0 External Hard Drive, model no. WDBFJK0040HBK-NESN, for $159.99. Add it to your cart and it drops to $129.99. With free shipping, that's $10 under our mention from a month ago and the lowest total price we could find by $20. It features local and cloud backup and up to 5Gb/s data transfer speeds.