Self-publishing costs and where the money actually goes
The honest budget for a self-published book is not the platform fee — marketplaces charge nothing upfront — it is production: editing, cover, formatting, proofs and marketing. An integrated workflow collapses most of the production line into one subscription, which is why per-book cost drops sharply after the first title. Whatever your stack, price the whole project before writing chapter one, using a cost calculator rather than optimism.
Then understand each channel’s take: Amazon’s ebook royalty bands and print costs are published on KDP; direct sales through an Automateed page cost a flat 15%. The spread between channels is the margin you are paying for discovery.