Newegg offers the Hitachi Travelstar 500GB Serial ATA 3Gb/s 2.5" Internal Notebook Hard Drive, model no. H2IK5001672SP, for $49.99 with free shipping ($0.10/GB). (NextWarehouse and Amazon charge the same.) That's tied with our June mention and the lowest total price we could find by $5. It runs at 7200 rpm. Deal ends January 2.