A good article by a friend of mine: https://www.finewoodworking.com/2020/05/13/fair-enough
I remember many years ago reading a comment by someone else about competing with the "hobbyist" for products. The comment was that someone who did not have a grasp on time, material, overhead and profit just produced stuff "for fun." The result was an excess of product to be gotten rid of at any price.
I've also heard many times about people who "just want to cover their material and save a little for a new tool some day," who really have no idea of the the costs that go into making a product for sale.