This deal has ended.
Buy.com has their Western Digital My Book Essential 2TB USB 2.0 External Hard Drive (technically two 1TB drives) on sale for $489.99. Plus, delivery is free, there is no sales tax (except CA, MA, MD, TN), and new Google Checkout users can get an additional $10 discount. If you didn't know, 2TB (terabyte) is the equivalent of 2,000GB, which is roughly 20 times the storage the average computer has, and is practically enough space for an army of people. This drive is currently over $600 at several other sites.