Best Buy offers the Western Digital My Book for Mac 2TB USB 2.0 External Hard Drive in Charcoal, model no. WDBAAG0020HCH-NESN, for $69.99 plus $5.99 for shipping ($0.04/GB). That's $30 under our February mention and the lowest total price we could find by $44 and among the best prices we've seen for a 2TB USB hard drive. Sales tax is added where applicable. It features an illuminated capacity gauge, Time Machine compatibility, password protection, and more.

Note that this item is on backorder, with an estimated ship time of one to two weeks.