I have a brand new quad controller. It is the Hobby king 2.1 with the 168 atmega chip that quotes at usd14.99 on their website.

http://www.hobbyking.com/hobbyking/store/%5F%5F19534%5F%5FHobbyKing%5FMulti%5FRotor%5FControl%5FBoard%5FV2%5F1%5FAtmega168PA%5F.html

If you are in Bangalore and can pick it up near or around Cubbon park, it is yours for rs. 500. Otherwise rs. 600 (including shipping).

First one to PM with a firm confirmation can have the controller.

Sold to rcpilotacro.