Dell's Inspiron 530 Desktop PC is now on sale for $449 after a $185 instant discount. It also features a 2.33GHz Intel Core 2 Quad processor, 4GB memory, 640GB hard drive, 16x CD / DVD burner, Windows Vista Premium, and more. Similar HP Desktops are $700. Most components are upgradable, just scroll across the icons at the center of the page. It doesn't include a monitor but there are plenty of great deals on those at the moment. Shipping is $39.99 with sales tax charged in most states.