Buy.com offers the Iomega StorCenter px4-300d External Network Attached Storage Enclosure, model no. 35098, for $577.99. This $100 mail-in rebate cuts it to $477.99. With free shipping, that's $52 under our July mention and the lowest total price we could find by $11. It features an Intel Atom 1.8GHz dual-core processor, support for up to four SATA hard drives up to 12TB (no hard drives are included), RAID 0, 1, 10, 5, and 5+1, Gigabit Ethernet, two USB 2.0 ports, one USB 3.0 port, and more. Rebate expires March 31.