BuyDig offers the Seagate 3TB Expansion USB 3.0 External Hard Drive, model no. STBV3000100, for an in-cart price of $119. Apply coupon code "30yrsHotDeals15" to cut it to $104. With free shipping, that's $0.03/GB and the lowest total price we could find by $17, although we saw it for $4 less in April. It features built-in power management.