B&H Photo-Video offers the Thecus 4-Bay External Network Storage Enclosure, model no. N4100PRO, for $294.95. With free shipping, that's $44 under our October mention and the lowest total price we could find by $15. This Gigabit Ethernet NAS enclosure can hold four Serial ATA hard drives up to 4TB and supports RAID 0, 1, 5, 6, 10, and JBOD.