BuyDig offers the Western Digital My Book Essential 3TB USB 3.0 Desktop External Hard Drive, model no. WDBACW0030HBK-NESN, for an in-cart price of $139. Coupon code “BGSaveACool5″ drops it to $134. With free shipping, that’s $0.04/GB, $16 under our mention from three weeks ago, and best price we’ve seen on this hard drive this year. (It’s a current price low by $12.) This drive features dual USB 3.0 and USB 2.0 compatibility and is purported to run 3x faster than a similar USB 2.0 device when connected to a USB 3.0 port. It also features password protection with hardware encryption.