Hello. I have two sons, both grown, that I equally paid my half of expenses until they graduated college. I was getting approximately 1000.00 a month for two boys. Anyway, fast forward to today, I'm remarried to a wonderful man with two girls. One is 16 and I know the dreaded, who's purchasing a car and all the expenses that go along with it are coming. My husband pays 4000.00 per month to the BM in child support. He also pays 60% of unpaid medical expenses. Covers both girls in our health insurance plan, too. That's about 400.00 per month for just their part.