GearBest offers the JJRC 6-Axis Waterproof Quadcopter Drone in Green, model no. H31, for $22.90. Coupon code "GB3RDdwe" drops it to $19.99. (Choose "US-LA" under Warehouse Options to see this deal.) With free shipping, that's the lowest total price we could find by $8. It features a 2.4GHz remote with LCD display, 8 to 10 minutes of flying time, and one LED light.