How much bear grylls earn??

I tried looking for it in the Internet and there is no information about it. If you see one there it is most likely an estimate or a lie since it is not publicly known. I would also love to know . I know that he donates some of his money to different charities that he is the founder of or is passionate about. He does not really live in a luxurious way. The last time I checked he was living in a boat with his family. I don't know but he may also own a house that don't float lol. I think what he is doing even though it might look fun is pretty dangerous. They would have to pay me a ton of money to eat and drink what he has been eating in the wild.