Want a cheaper and 7min of flight time for a tinywhoop style machine ? Here is a the mini-whoop quadcopter slightly larger (100mm) but adapted for 8.5×20 motors. Designed originally for the scisky FC and Quantum Elite of FX798Y camera, you can install if you want the new brushed SPF3 evoo board recently introduced.
You can print the frame here http://www.thingiverse.com/thing:1715901 or buy it directly at http://hicwic.com/index.php?id_product=11&controller=product&id_lang=2
RCgroups thread: http://www.rcgroups.com/forums/showthread.php?t=2724990