Bestbuy has this drive
Link: http://www.bestbuy.com/site/Western Digital - My Book Essential 2TB External USB 3.0/2.0 Hard Drive - Black/1251309.p?id=1218242900307&skuId=1251309&st=2tb western digital&cp=1&lp=2
on sale for $99 PM to Staples and use a 25 off 75 coupon.
This is a good deal since it is USB 3.0.
Staples link
Link: http://www.staples.com/Western-Digital-My-Book-Essential-2TB-Ex