“Some things in life money can’t buy. Unfortunately, hair isn’t one of them.” – explain a research team from the Department of Economics at Appalachian State University, US. They also point out that : “Balding men are willing to pay considerable amounts of money for an improvement in coverage.” – raising the question : “What’s the average willingness to pay to move from a glistening cue ball to a luscious mane?”
Their research, entitled ‘Willingness Toupee’ [geddit?] is published in the March 2019 edition of the journal Economic Inquiry.
And the answer to the question is, apparently, “About $30,000”
A full version of the paper is available here