In addition, these websites are totally free. The website listed here: > I consider requests for full commercial use of all content on this site (and the gith

In addition, these websites are totally free. The website listed here: > I consider requests for full commercial use of all content on this site (and the github repository). For a complete buyout of all content rights, the cost is €10,000,000. > I’d like to ask you what problems you have by that I keep on having the copyright of my document. + no commercial-use without paying 20% royalty. So fairly expensive for a Keras tutorial.