It's going to cost you around $100K if you're lucky, and it could be a lot more. That's what I mean. There are no exact numbers because it depends on how many hours of lawyering it takes to get through the endless process and procedure (designed by lawyers, of course) before you ever even go to court. You can't know that in advance. And if the other side has more money than you, they know its to their advantage, so they will try to drag out the process and bleed you dry to gain leverage or even force you to drop the case.