For its current newsletter subscribers, newegg offers the Seagate 4TB Backup Plus USB 3.0 External Hard Drive, model no. STCA4000100, for $209.99. Coupon code "EMCNJNJ56" cuts it to $199.99. With free shipping, that's $0.05/GB and the lowest total price we could find by $28, although it was $50 less in June. It's compatible with Windows and Mac, backwards compatible with USB 2.0, and features two backup scheduling options, social network sharing, and more. Deal ends January 7.