Tanga offers the refurbished Asus T-Mobile CellSpot Dual-Band 802.11ac Wireless Gigabit Router, model no. TM-AC1900, for $49.99 with free shipping. That's $10 under yesterday's mention of a new one and $10 under the lowest total price we could find for a new unit. It features wireless data rates up to 1.3Gb/s, dual-band support, and prioritizes WiFi calls.
Note: No warranty information is available, although the seller does offer a 15-day return policy.