B&H Photo Video offers the Iomega StorCenter px4-300d External Network Attached Storage Enclosure, model no. 35098, for $539.99. (Click through to B&H to see this price.) This $200 mail-in rebate (paid via a Visa prepaid card) cuts it to $339.99. With free shipping, that's tied with last week's mention as the lowest total price we've seen for this NAS. (It's also a current price low by $10.) 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 August 31.