Staples offers the Western Digital 1.5TB My Passport Portable USB 3.0 External Hard Drive, model no. WDBY8L0015BBK-NESN, for $79.99 with free shipping. That's $0.05/GB and tied with our mention from three weeks ago as the lowest total price we've seen. (It's a current price low by $10.) It features a data transfer rate of up to 5Gbps.