A cheap, non-acrimonious divorce will probably still cost you about $10k in legal fees. That's not the biggest expense though. I won't get into the details of my specific situation, but I stand to lose about $10k-20k in taxes every year if I get divorced, instead I just split that money with my ex. You definitely have to trust your ex for stuff like this, because being legally married you can get really screwed (she could go crazy on a credit card and I would be liable for half of it).