Linksys Direct via Newegg offers the refurbished Linksys 802.11ac Dual Smart WiFi Router, model no. EA6350, for $44.99 with free shipping. That's the lowest total price we could find for a refurb by $10. It features four Gigabit ports, USB 3.0 port, smart WiFi software, and data transfer rates of up to 867Mbps.

A 90 day warranty applies, although it's unclear who backs it.