MegaMacs offers the used Apple iMac Core 2 Duo 1.83GHz 17" Desktop for $399.99 plus around $28 for shipping. That's $54 under our January mention of a used unit and the lowest total price we could find for a used unit now by $50. Features include an Intel Core 2 Duo 1.83GHz dual-core processor, 17" 1440x960 widescreen LCD, 1GB RAM, 160GB hard drive, DVD/CD-RW combo drive, 802.11g wireless, Bluetooth 2.0, webcam, and more. Deal ends February 22 at 1 pm ET.

A 30-day MegaMacs warranty applies. Also, an OS is installed on this system, but it's unclear which OS it is.