StackSocial offers the Toruk Quadcopter Drone with HD Camera, model no. AP10, for $679. Coupon code "STACKAP10" drops it to $609. With free shipping, that's the lowest total price we could find by $80. It features a flight time of up to 25 minutes, 16MP still photography, 1080p video, smartphone controller mount, and GPS-based return-to-home autopilot. Deal ends April 10.