What should I consider before choosing a book publishing service?

[cecilamyers]

I’m reaching the stage where I need to choose a book publishing service, and I’m finding the options a little confusing. I’ve read different opinions, but I’d rather learn from people with real experience. What factors mattered most for you editing, distribution, pricing, rights, or support? Which questions should I ask before deciding, and what common mistakes should I avoid? I’d appreciate honest suggestions.