Newegg offers the refurbished Netgear N900 Dual Band 802.11n Wireless Gigabit Router, model no. WNDR4500-100NAR, for $34.99 with free shipping. That's tied with our mention from two weeks ago and the lowest total price we could find for a refurb by $5. It features four Gigabit Ethernet ports, two USB ports, and data transfer rates of up to 900Mbps.
A 90-day warranty applies, although it's unclear who backs it.