The Seagate Barracuda 7200.10 320GB Serial ATA II Internal Hard Drive, model no. ST3320620AS, costs $94.99 with free shipping at newegg.com. Coupon code "5offbarracuda" takes $5 off, dropping it to $89.99. That's $5 over our mid-October mention but still the lowest total price we could find by $11. This perpendicular drive features a 16MB cache and runs at 7200 rpm.