Drone SuperStore via eBay offers the refurbished DJI Mavic Pro Quadcopter Drone with 4K Camera for $669 with free shipping. That's $96 under our Cyber Monday mention of a new unit and the lowest price we've seen for this model. (It's $127 less than the best deal for a new unit today.) It features a 12.7-megapixel camera with 4K video recording, top speed of 40mph, run time of up to 27 minutes, and control range of up to 4.3 miles.

Note: A 90-day Drone SuperStore warranty is included.