Amazon offers the TP-Link Archer C50 802.11ac Wireless Dual-Band Gigabit Ethernet Router, model no. C50 AC1200, for $49.99 with free shipping. That's the lowest price we could find by $24. It features four Ethernet ports, USB port, simultaneous 2.4GHz and 5GHz frequencies, and two external antennas.

Note that it's expected to ship in two to three weeks.