Western Digital Caviar 750GB Black Edition SATA Hard Drive for $79.99 shipped. Here is a screenshot for your reference. The 1TB Black Edition is also available for $99.99 shipped. Note that it comes in OEM packaging, which means no pretty retail box and marketing materials but is otherwise identical. The Black Edition is WD’s high-performance line that usually require a premium and comes with a 5-year warranty. More information can be found here.
Originally posted earlier, this is just a friendly reminder.