This deal has ended.
Get this Samsung D3 Station 4TB External Hard Drive (model STSHX-D401TDB) for $129.99 plus free shipping at Newegg. This was the lowest price we found by $27 and a low price on a drive of this capacity. It comes with automatic backup functions, encrypts data and connects with USB 3.0, the newer and faster USB spec, which is backward compatible with older USB. There's no sales tax (except CA, NJ, and TN).