Well I sought initial invention interest from the my consumer base when I had a 3D drawings, then I took to the intellectual community as I built a first run prototype, and I demonstrated the prototype on social media after filing my patents. I have like a polio vaccine invention, of course I will charge money. God does not feed family, products do. However harmony states that if I charge the price that makes the greatest positive social impact, inform others of my deed, and be followed by no one else, my children will still live in a better world because of my actions.