Best Buy offers the TP-Link 802.11ac Wireless Dual Band Gigabit Router, model no. Archer C9 AC1900, for $112.99 with free shipping. That's $7 under our mention from three weeks ago and the lowest total price we've seen. (It's a current low by $17.) It features a 1GHz dual-core processor, full Gigabit ports, USB 3.0, simultaneous 2.4GHz and 5GHz frequencies, beamforming technology, and three detachable antennas.