MegaMacs offers the used Apple Mac Pro 4-Port PCI-Express Serial ATA RAID Controller Card, model no. MB845Z/A, for $179.99 plus around $8 for shipping. That's $48 below our May mention and the lowest total price we could find by $501 for a new unit. It features 512MB of cache and an integrated 72-hour battery. Deal ends January 10.

No warranty information is provided.