Western Digital My Passport Ultra 2TB USB 3.0 Portable Hard Drive for $70.00 shipped after coupon code PAYPAL30 and using PayPal as the payment method (details here). Here is a screenshot for reference. This portable USB drive does not require a separate power supply and is smaller than most of them, making it more convenient to carry around. USB 3.0 interface is compatible with USB 2.0 and able to transfer data at 3x faster by using USB 3.0. Most places have it for about $99.
This deal has expired as the coupon has expired. Congratulations to those able to get in on it.