Megamacs offers the used Apple iMac 20" Intel Core 2 Duo 2.66GHz All-in-One Desktop, model no. MB324LL/A, for $659.99 plus around $36 for shipping. That's $18 under our mention from two weeks ago and the lowest total price we could find for a used unit now by $262. Features include an Intel Core 2 Duo E8335 2.66GHz dual-core processor, 20" 1680x1050 widescreen LCD, 4GB RAM, 320GB 7200 rpm hard drive, DVD burner, NVIDIA GeForce 9400M 256MB graphics card, Bluetooth 2.0+EDR, 802.11n wireless, iSight webcam, and OS X 10.6 Snow Leopard. Deal ends July 12.

A 30-day MegaMacs warranty applies.