Get your discounted crazyflie @massdrop:

If you ever wanted to build a development kit with the power of flight, now’s your chance. An open source kit designed for flexible development and hacking, the Crazyflie Nano Quadcopter Kit 10-DOF w/ Radio comes with all the parts you need to construct your own aircraft weighing only 0.67 oz and measuring 3.54” motor to motor. To see the copter in action, scroll on down to embedded video just before the Specs section.