MegaMacs offers the refurbished Apple Mac Pro Intel Xeon 4-Core 2.66GHz Workstation, model no. MA356LL/A, for $349.99 plus around $35 for shipping. That's $43 under our mention of a similar refurbished build from two weeks ago (which featured less RAM) and the lowest total price we could find for a refurb by $26. It features dual Intel Xeon 1.33GHz Woodcrest dual-core processors (four cores total), 6GB RAM, 1TB 7200 rpm hard drive, NVIDIA GeForce 7300 GT 256MB graphics, SuperDrive, and OS (it is unclear which version is included). Deal ends September 30.
A 30-day MegaMacs warranty applies. Note that this item is in "Grade A" condition and may have scratches or show signs of minor wear.