Spines runs your manuscript through AI tools and keeps up to 30% of your royalties indefinitely. Columbia Publication pairs you with a named US editor, a flat fee, and you keep 100% of what your book earns -- forever.
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| Spines (AI Publisher) | Columbia Publication | |
|---|---|---|
| Editing | AI-driven, human oversight on request | Named US editor, every stage |
| Royalties | Spines keeps up to 30% of net, indefinitely (spines.com, accessed Jul 19, 2026) | You keep 100%, always |
| Pricing | $3,600-$10,410, one-time (spines.com, accessed Jul 19, 2026) | Flat fee from $2,499, shown upfront |
| Process control | Automated pipeline | You approve every milestone |
Pricing and royalty terms verified directly against Spines' published rate card at spines.com/pricing, accessed Jul 19, 2026. Columbia Publication is not affiliated with Spines. See our full disclaimer in the footer.
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A 30% royalty cut on a successful book compounds for years. A flat fee means you pay once and own everything from day one.
Takes 2 minutes. Zero obligation.