Hair analysis test is simple dermascopy test which gives a magnified view of the scalp
It may cost you according to the type of machine used in the analysis. For simple viewing it do not cost more than few bucks but for detailed analysis may cost you heavily according to the detailed report given to you.
In my experience mere simple examination by naked eye give you an idea of exact nature of the problem. Meet an experienced dermatologist
to solve your problem without hair analysis test .