With or without shoichad? I seriously do think a dayan charges $150/hr and up if he is serious and the case is serious. The ones who do it leshem shomayim probably can’t handle more than a simple divorce or perhaps a yerusha inyon. Shoichad can start around $50,000 for a heter mea rabbonim up to millions for dinei mamoinos if money laundering is also necessary.
I can get you a dayan for $50 – you know Nissim Dayan, he sells nuts in the shuk in Ashkelon? He does dinei nefashois too, well, at least he did, but that was 30 years ago and he did his time already.