B&H has the Western Digital 2TB My Book for Mac External Hard Drive for a low $70 Shipped. That’s the lowest price we could find for the 2TB by more than $45. Amazon sells it for $99 and their customers gave it 4/5 stars with favorable reviews. Western Digital’s My Book, now features visual, easy-to-use, automatic, continuous backup software and drive lock security protection. B&H has warned that their supply is limited at this price.