Groupon offers the factory-refurbished Escort Solo S2 Wireless Radar / Laser Detector for $139.99 with free shipping. That's $165 off and the lowest total price we could find. Features include 360° X-band, K-band, and KA-band detection, 10 programmable functions, auto, city, and highway modes, and LCD display. (Two AA batteries are included.) A 90-day Escort warranty applies. Deal ends August 1.