https://www.collaborativepractice.com/lib/articles/Keen%20Interest%20in%20Gentler%20Ways%20to%20Divorce.pdf
https://www.collaborativepractice.com/lib/articles/CL%20Moving%20To%20Mainstream.pdf
http://www.collaborativepractice.com/lib/PDFs/Collaborative%20Divorce%20Booms.pdf
These articles shows that Collaborative Divorce is popular across the United States. The Associated Press article also give some good information on the costs of different ways of resolving the legal issues in divorce.
Collaborative Law may be new to you, but it is not new to lawyers. It is a tested and established structure for domestic legal issues.