newegg offers the Seagate BlackArmor 220 6TB Network Attached Storage, model no. STAV6000100, for $379.99. With free shipping, that's $0.06/GB, that's $100 under our March mention and the lowest total price we could find.

This network attached storage device is designed to provide centralized storage and data backup for up to 20 PCs and features a 7200 rpm spin rate, 32MB cache, Gigabit Ethernet, two USB 2.0 ports, and more. It can function as an FTP server for remote file access and can stream media to DLNA-compliant devices and computers running iTunes.