Newegg offers the Seagate 4-Bay Diskless Network Attached Storage Enclosure, model no. STBP100, for $139 with free shipping. That's tied with our mention from two weeks ago and the lowest total price we could find by $120. (It was $7 less last month.) It features four SATA ports, Universal Storage Module, and support for RAID 0, 1, 5, and 10.