gotak,
If you are talking about price of R/C, HK is one of chepest places for them.
There are several of model shops near MongKok area.
Cyberkopter.
next to Monk Kok police station near Prince Edward MTR Station.

another one (Forgot name. I never go there since they think their customers are all stupid and very bad service).
In front of YMCA hotel near Ya Ma Tae KCR station.

avance_x,
I'm a owner of two hornets. and they fly OK.
Since you already have a FP heli(hummer), why do you want to get anoter FP corona?
You can get LOGO10 instead and cheapest price in the world is Hong Kong and much better performence.
I have got video of cybercopter from AMD but it is very poor quality Vid. and just contains hovering. If you want, I will send you.