Best Buy offers the Seagate Expansion 3TB USB 3.0 External Hard Drive, model no. STAY3000102, for $119.99 with free shipping ($0.04/GB). That’s $30 off and the lowest total price we could find. Sales tax is added where applicable. This drive is purported to run 3x faster than a similar USB 2.0 device when connected to a USB 3.0 port.