Need expert witness for child support and the reasonable needs of children in high income case? Kid Costs is a fact-finding service that provides extensive research and exhibits on the reasonable needs and costs of children and used mostly by lawyers working on high-income child support cases. Every analysis we do is specially fit for each individual client on a case by case basis with the goal of determining the child's best interests, as well as both parents' best, and most fair, financial interests in establishing child support payments. We also offer pre-trial analysis or expert witness testimonials.