I've had a non-fiction research-practice book for my professional field (psychology) published with one of the big presses (Routledge, owned by Taylor-Francis). I didn't have my own agent - just worked with my editor). I'm glad I did it, but DW and I joke that my 6 month royalty check can "almost" cover sushi for our family of 5.
I'm working on a new book that would broadly fall into the self-help/personal wellness category. I plan to self-publish -- and will likely do so even if a professional publisher showed interest. My reasons include:
- I want complete control of the title, content, cover, timeline,etc.
- I don't expect that sales of my book could be all that significant, but it's possible that it could lead to paid speaking gigs and consulting
- I want the option to sell my book directly from my own website.
- I want complete control over the price, giving away numerous free copies, and control of the e-book and audio book
- Traditional publishers won't invest anything in sharing/promoting your book until it's already selling well ... and if I put the work into making it sell well, then I want more than a 10-15% cut.
- There are more and more options that allow you to possibly get a self-published book into bookstores. I think that was impossible when I published my first book (about 10 years ago).
There are huge differences based on the type of book: fiction, non-fiction (how-to), historical non-fiction. Can you share a little more about your book. And congrats on finishing it! As you've already experienced, many people will say "I should/could write a book" but there's only a tiny fraction of those who actually follow through.