Dell Small Business offers the Dell 1TB 2.5" Portable USB 3.0 External Hard Drive, model no. W73YH, with a $25 Dell Gift Card for $69.99 with free shipping. Assuming you'll use the gift card, that's $10 less than our May mention of a similar Dell-branded drive and the lowest total price we've seen. This drive is USB-powered; it doesn't require an AC adapter.