Not credible. Once the article is adopted by magazines or other books, he will pay you the manuscript fee, and he won't spend any money himself ... If you post the article before that and they change someone else's name, it's none of your business ... so I advise you not to post it.

If you want to publish a paper, like some well-known newspapers or magazines, there are special mailboxes for online submission. If they are adopted, they will contact you. You might as well go to their homepage and have a look!