Trans. Intl. offers the Hitachi Deskstar 7K4000 4TB Serial ATA 6Gb/s Internal 3.5" Hard Drive, model no. 0S03355, for $250 plus $8 for shipping ($0.06/GB.) That's the lowest total price we could find by $32, although we saw it for pickup at Fry's Electronics stores for $8 less two weeks ago (since expired). It runs at 7200 rpm and features a 64MB cache.