FATZ has a thread in the group buys section. 3000 bucks.
I agree with what you are saying re the price.
The tricky part, if you can call it that, is the oil feed to the actuator, which is run into the back of the camshaft by replacing the half moon in the head. Pretty easy to machine something up to do it, but having a camshaft with a hole down the length of it is also required, along with a little bit of plumbing.