Linksys offers its refurbished Linksys E8400 AC2400 802.11ac Dual-Band WiFi Router for $54.99 with free shipping. That's $13 under the lowest price we could find for a new one. It features a 1.4GHz dual-core processor, wireless data rates of up to 2.3Gb/s, four external antennae, four Gigabit Ethernet ports, and USB 3.0.

Note: A 90-day Linksys warranty applies.