mwave offers the Sans Digital MobileSTOR 4-Bay FireWire 800 / FireWire 400 / eSATA / USB 3.0 Hard Drive Enclosure in Silver, model no. MS4CT+, for $169.99 with free shipping. That's the lowest total price we could find by $28. It features four drive bays that can each handle up to a 3TB 3.5" SATA hard drive (12TB total), LCD display, RAID 0, 1, 1+0, 3, and 5 configurations, and more.