"We encourage people who redistribute free software to charge as much as they wish or can. ... So if you are redistributing copies of free software, you might as well charge a substantial fee and make some money. Redistributing free software is a good and legitimate activity; if you do it, you might as well make a profit from it. ... Distributing free software is an opportunity to raise funds for development. Don't waste it!" https://www.gnu.org/philosophy/selling.html