The minimum costs in divorce are the court filing fees. 
Check with your local Superior Court to see what those are in your county. The initial filing fee is paid by the person who is filing the documents. Low-income people may qualify to have the filing fees waived. Other costs include the costs of the mediator, the lawyers’ fees, and the costs of consultants. These costs are paid by the parties. If one of the parties lacks financial resources while the other party has financial resources, the resourced person may be paying for some or all of these costs. A low-resourced spouse may ask the court to have a resourced spouse pay towards their fees. The sad reality is that when you have professionals involved a divorce is never going to be cheap enough. However, it’s best to make resources available, to have a good divorce.