Thor is a fully 3D printable UAV (unmanned aircraft vehicle) developed by Airbus with production price of some 20000 Euro. The cost could probably go even further down, but it is many times cheaper when compared with simillar drones.
Thor is made of some 50 3D printed parts, two electric motors, and a remote control with some 4 weeks needed for printing and assembly. It weights 25 kg and has some 4 meters in wingspan.
It has some 40 km in range and 18 successful flight missions behind it.
Here is the video presentation (in German):
Source and more info: