Dell Home offers the Seagate 3TB Expansion USB 3.0 External Hard Drive, model no. STBV3000100, for $124.99. Add it to your cart and it drops to $99.99. With free shipping, that's $0.03/GB and the lowest total price we could find by $11, although we saw it for $10 less two weeks ago. It features built-in power management.