Newegg offers the refurbished Netgear Dual Band 802.11ac Wireless Smart Router, model no. AC1450-100NAS, for $69.99. Coupon code "AFEX15D721P" cuts it to $54.99. With free shipping, that's $5 under our mention from May and the best price we've seen. (It's also a current low for a refurb by $15.) It features data speeds of up to 1.3Gb/s, USB, one WAN port, and four LAN ports.
A 90-day warranty applies, but it's unclear who backs it.