Choose a publishing service by comparing the contract and deliverables, not just the sales presentation. You should know exactly what work is included, who owns the final files and platform accounts, which third-party fees are separate and what the service does not guarantee.
Ask who owns what
Confirm ownership of the manuscript, cover files, ISBN or imprint arrangements, retailer accounts, website domain, advertising accounts and source files where relevant.
Check the complete scope
Ask whether editing, proofreading, cover design, formatting, uploads, revisions and post-launch support are included or separately priced.
Be cautious with outcome guarantees
No service can responsibly guarantee bestseller status, retailer ranking, media coverage or a specific number of sales. Evaluate process, transparency and evidence instead.