Yeah, that’s a little pricey!
I’m thinking more of a zwave version of the remotes commonly available: http://www.lowes.com/pd_379573-1811-RCE-103LW_0__?productId=3567442&Ntt=ceiling+fan+remote&pl=1¤tURL=%3FNtt%3Dceiling%2Bfan%2Bremote&facetInfo=
These typically have a little unit that sits inside the housing of the ceiling fan that takes the place of the pull chain for the fan and/or the pull chain for the light. Now I suspect adding zwave to that little unit would raise the price from $20-40 to something higher… but $150 is quite steep! Furthermore it looks like with that unit you’d need separate wiring for the fan and the light back to your wall switch.
For those not familiar with ceiling fans/light combos, typically these have two independent systems. You have a wiring loop for the lights and a wiring loop for the fan. Often these are wired to the same hot line which is connected to a wall switch. This is the setup in my den. I turn on the wall switch, this sends power to both the light loop and the fan loop. Then on the unit itself are two pull chains. The first turns on/off the light. The second will rotate the fan through four settings: Off-High-Medium-Low. (Obviously the pull chains will do nothing if the switch in my den is turned off.) The remotes you can get for these units replace those pull chains. This is where I’d like to see the Z-wave unit sit.
Another common alternate setup is what I have in all my bedrooms: I have two sets of hot lines coming into the fan/light unit. The first hot line goes to the fan loop. This is always hot, there is no off switch on it. I control the fan with the pull chain. The second hot line goes to the light loop, but this line is also tied to a wall switch. Now I can use the wall switch to turn on/off my light, like I would a normal bedroom light. Flipping the switch will not have any effect on the fan as that’s a completely separate line. I don’t use the pull chain to control my light. Again a z-wave unit would sit in the fan/light housing, but this time it would just control the fan. I would not wiring up the light loop into the z-wave unit.