mwave offers the Sans Digital TowerSTOR 4-Bay Serial ATA Hard Drive Enclosure, model no. TS4CT, for $329.99. With free shipping, that's the lowest total price we could find by $52, although we saw it for $10 less in October. This four-bay enclosure features and LCD display for RAID management and system status, FireWire 400/800, eSATA, USB 2.0 ports, and more.