I agree with CTH, you should have slugged the mediator in the gut before he had a chance to calculate that number...That's insane!! As a contingency, maybe you should come up with a "justifiable" number (keep it to yourself) just in case the W changes her tune.
In my case, my W makes more money than I and will be paying me child support (only a couple hundred bucks). I hate taking her money but I have the kids more often so I felt like at least in the short term it was/is the fair thing to do. We both have high salaries so I think she resents the fact she has to do this...Oh, well.
