MacMall offers the Apple AirPort Extreme 802.11ac Wireless Base Station, model no. ME918LL/A, for $184.99 with free shipping. (Amazon and B&H Photo-Video charge the same.) That's $9 under our July mention and the lowest total price we could find by $14. It uses 802.11ac WiFi technology, which offers up to 40% faster transmissions than 802.11n.