Newegg offers the Synology DS412+ 4-Bay All-in-One Gigabit NAS Server for $599.99. Coupon code "AFSUMRLNG3" cuts it to $539.99. With free shipping, that's $60 below our January mention and the lowest total price we've seen. (It's a current low by $35.) It features a 2.13GHz dual-core processor, dual Gigabit Ethernet ports with failover and link aggregation support, USB 3.0, and eSATA. No hard drives are included.