The expensive part isn't the writing, editing, or publishing. The expensive part is the marketing. He spent years building a following, which is fantastic. That's the hard part.<p>A publisher can help you jump start that step by getting your book in stores, on lists, and otherwise talked about. They take a steep cut for that, so it's up to you if it's worth it. But if you don't want to run a weekly podcast, monthly newsletter, and speaking tour, it is worth considering.