Im assuming you’re talking about the $7 for the notion template. It’s my basic writing system that helps you take an idea to a publish article. If you use your articles as a the first draft for your book, the template will be helpful.

Notion is an app that people use for productivity, writing, etc. I have found it to be super useful for my article writing and other first draft projects.

In terms of editor. I do have an editor I use for my books. You can find someone you know for your editor or hire someone on upwork or fiverr. I have done this and it was a very good experience. Either way, you will probably pay considerably more for editing services. But that is totally worth it.