Newegg via eBay offers the refurbished Asus Dual-Band 802.11ac WiFi Gigabit Router, model no. RT-AC87U, for $149. Coupon code "C15FATHERSDAY" drops it to $134. With free shipping, that's $111 under our mention of a new unit from two weeks ago (although that was bundled with a modem) and the lowest total price we've seen for this model. (It's also $93 below the best price we could find for a new unit today.) It features data transfer rates of up to 2.4GB/s, four Gigabit LAN ports, and USB 3.0. Coupon expires today.

Note: A 90-day warranty is provided, although it is unclear who backs it.