too bad it's also proprietary (works only with "pinball collection hd") what are they thinking? and why gives apple their OK on this (is even sold via apple-store)? and where is that "prof. snape dafuq" when you need it...
It's such a niche-market item, and therefore so expensive, its makers would be foolish not to create more interest in both the controller and its pinball apps by increasing compatibility with other apps (and consequently value).