Today only, Woot Sellout offers the Clickfree 640GB C2N Portable Network Backup USB 2.0 Drive, model no. 627NCR, for $79.99. With $5 for shipping, that's $0.13/GB and the lowest total price we could find by $9. Features include 256-bit hardware encryption, password protection, multiple machine backup, and more. A docking cradle is also included.