Walmart offers the Hornettek Prolinux 2-Bay Gigabit Ethernet Network Attached Storage Server, model no. GS-3215, for $80.01. Shipping adds $1.97, or choose free Site-to-Store. That's the lowest total price we could find by $28. Sales tax is added where applicable. It features two USB ports and a Gigabit Ethernet port. This NAS enclosure can hold two 3.5" SATA hard drives and supports RAID 0, RAID 1, and more.