DJI Official Store via eBay offers its factory-refurbished DJI Phantom 4 Quadcopter Drone with 4K Camera, model no. CP.PT.000312, for $729 with free shipping. That's tied with our expired mention from three days ago as the lowest total price we've seen for this model, new or refurbished. (It's also $233 under the best deal we could find for a new one today, although most retailers charge $1,199 or more for a new unit.) It features a gimbal-stabilized 12-megapixel camera with 4K video recording at 30fps, slow-motion 1080p recording at 120fps, front-facing visual sensors, 44.7mph top speed (in sport mode), live HD video monitoring, GPS navigation, microSDXC card slot, and up to 28 minutes of flying time per charge. A 1-year DJI warranty applies.