I bought two sets from Wang Kee few years ago. It cost around $450.
Incluing one servo (similar to Futaba 3003)
It is good for stock motor (white skin pig) or black sport motor only.
I bought it for fun only and it is of little practical use. For the same amount of $$ or even less, one can actually buy a Futaba MC230 plus the cheap 27AM receiver and 3003.