newegg offers the Hitachi Travelstar 500GB Serial ATA 3Gb/s 2.5" Internal Notebook Hard Drive, model no. H2IK5001672SP, for $59.90 with free shipping ($0.12/GB). (Amazon charges the same price.) That's nine cents under our August mention and the lowest total price we could find by $3, outside of the price below. It runs at 7200 rpm. Offer ends November 21.

A close price: OfficeMax offers it for $59.99 with free shipping.