Best Buy offers the HGST 1TB TravelStar 7K1000 Serial ATA 6Gb/s 2.5" Internal Laptop Hard Drive, model no. 0J22423, for $49.99 with free shipping. That's $10 under our mention from three weeks ago and the lowest total price we've seen. (It's also a current low by $10.) It runs at 7200 rpm and features a 32MB cache.