MegaMacs offers the used Apple iMac Intel Core 2 Duo 2.8GHz 24" Desktop, model no. MB325LL/A, for $789.99 plus around $39 for shipping. That's the lowest total price we could find for a used model with these specs by $236. Features include an Intel Core 2 Duo T7700 2.8GHz dual-core processor, 24" 1920x1200 widescreen LCD, 4GB RAM, 500GB 7200 rpm hard drive, slot-loading dual-layer DVD burner, ATI Radeon HD 2600 PRO 512MB graphics, Airport Extreme (802.11n wireless), Bluetooth, iSight webcam, and Mac OS X 10.6 Snow Leopard. Deal ends May 16 at 1 pm ET.

A 30-day MegaMacs warranty applies.