ZipZoomfly.com has the Seagate Momentus 7200.3 2.5″ 320GB Serial ATA 3Gb/s Internal Notebook Hard Drive, model no. ST9320421AS, for $54.99 (69.99 – 15 MIR) with Free Shipping for a limited time. The $15 mail-in-rebate expires October 31, 2009. This laptop hard drive runs at 7200 rpm, features a 16MB cache, and includes G-Force Protection designed to help protect your data if it falls.