There are at least a dozen different kinds of book editors. Do you know the difference between hard editing and soft editing, or what developmental editors, technical editors and copy editors do? Of course not -- and neither do most people.You can go broke hiring book editors, and delay making money by years while these high-priced, thick-lensed nerdy English majors destroy your work.
Editors are notorious for distorting an author's 'authentic voice,' turning macho into effeminate or vice-versa, rearranging your sentences and paragraphs or even removing words and entire sentences. Lots of editors create errors while trying to correct what they think are errors. Editors are just a bunch of pompous, power-mad manipulators who can't write well enough to be actual authors. They are jealous of authors and want to destroy them. Things that snotty and snobby editors think are mistakes are your personal style, and should be preserved. It's ridiculous for you to pay money so someone you don't even know can mess up your great book.
The most popular book of all times is the Holy Bible -- and the Holy Words of God didn't need any editors. The Good Book is perfect just the way it is, and readers should read your precious words just the way they come out of your head.
Microsoft Word has a built-in spell checker and it will take care of any spelling misteaks just fine.
The courageous people who make political signs don't need editors, and their messages are powerful just the way they are. Nobody cares if words are not spelled the way an English teacher prefers, or if some funny curly thingees are in the wrong place or are left out.
Do you even know what a subordinate clause is? Or a gerund? Or an adverb? Of course not. Don't worry about it. Just write.
Languages are not 'fixed' or 'static.' Languages evolve, and you can help to make English more suitable for the 21st century. Write what you want the way you want. Shakespeare invented words. You can, too.