Look up the book “Hell’s Angel’s” by Hunter Thompson.
There’s a section in the book where he writes about the economics of being a hippie/biker/artist circa 1970.
A biker could work for six months as a Union stevedore and save up enough money to go on the road for two years. A part time waitress could support herself and her musician boyfreind.
According to this article, and others I’ve seen pen and paper is still best.
First, he wrote the book in the 1970s. People would have noticed if he was wildly off base.
Second, you can do a quick search and prove his numbers were correct.