Newegg offers the HGST 1TB Touro Mobile Pro USB 3.0 External Hard Drive in Black, model no. 0S03801, for $49.99 with free shipping. That's the lowest total price we could find by $11, although it was $5 less in October. This external hard drive runs at 5400 rpm.
Have an Android device? Pad your order over $50 and use Newegg’s Android app and pay using Google Wallet to cut it further to $34.99, excluding padding. (This discount can only be used once per account.)