Yes.... so I bought the cheapest valve only kit I could find on ebay, about $85. Its the valve in a flange, with the motor, wiring loom, controller and remote.
Its all a bit of an experiment, but I figured that (at least from the photo's and my own experience of these kinds of things) there could be no difference at all in quality between the sub 100 dollar ones and a 300 dollar one. We'll see i guess.
I love the idea of the wireless remote, cos then I dont have to do any cabin wiring (too lazy for much of that these days - removing and replacing trim is about my least favorite job on a car). Just run the loom up to the engine bay and run 12V to the controller, should be easy.
link to valve:
2.5" 63mm Electric Exhaust Catback Downpipe Cutout Valve motor +Remote Control | eBay