Fry's Electronics offers the Netgear ReadyNAS NV+ v2 4-Bay Gigabit Ethernet Network Attached Storage Enclosure, model no. RND4000-200NAS, for $229 with free shipping. That's the lowest total price we could find by $132 and the best no-rebate deal we've seen for it. (It was $29 less after a large rebate in September.) Sales tax is added where applicable. It features room for four Serial ATA hard drives (none are included) up to 12TB, Gigabit Ethernet, three USB 3.0 ports, one USB 2.0 port, RAID support, and more.

Update: It's now available for in-store pickup only.