To me its the standard price for these 2 items. Actuators go for about $150-160 and the flapper is not much at all, about $50. The cost is all in the labour to fit the actuator and porting which can run to about $500ish. Personally unless your doing it yourself, I would just get your choosen tuner to supply and install it all. Saves any issues down the track with warranty and such.