newegg offers the factory-refurbished Western Digital Scorpio Blue 750GB 2.5" Serial ATA 3Gb/s Internal Notebook Hard Drive, model no. WD7500BPVT, for $54.99 with free shipping. That's $0.07/GB and $13 under the lowest total price we could find for a new unit. It runs at 5400 rpm and features an 8MB cache. A 90-day Western Digital warranty is included.