Meritline offers the Cavalry Retriever Serial ATA 2-Bay USB 3.0 Hard Drive Duplicator / Dock, model no. EN-CAHDD2BU3C-ZB, for $54.99. Coupon code "MLCK191UNL1" cuts it to $44.99. With free shipping, that's tied with our June mention and $5 under the lowest total price we could find today. This USB 3.0 drive duplicator / docking station allows you to copy the entire contents of one hard drive to another (including boot drives) without a computer. It supports two 2.5" or 3.5" SATA hard drives or SSD to a Mac or PC. Coupon expires after 50 uses.