TIL the first toy RC quadcopter ("Drone") came out in 1991, 8 years before the Draganflyer 1 and at least 19 years before MultiWii started paving the way for modern Cleanflight (and Betaflight) based quads.

It is not that difficult to build your own drone. We have drone kits in different size and price range. Tarot X4 - Flight Time : 31 mins (no loading). Max Loading : around 3KG http://www.helipal.com/tarot-x4-quadcopter-frame-set.html Tarot X6 - Flight Time : 42 mins (no loading). Max Loading : around 4KG http://www.helipal.com/tarot-x6-hexacopter-frame-set.html Other Drone Kits : https://goo.gl/fN8JxR | HeliPal.com