Book indexing is typically billed at a per-page rate for most projects, with rates depending on the content (technical, academic, trade, etc.). Per-page rates typically range between $3-5 per indexable page. Contact me for a free quote regarding your individual project, for more specific information!
Occasionally different rate structures may make sense, including rates based on the entire project, per-entry, or even an hourly rate. Feel free to contact me to discuss your specific project and needs!
Although I do not provide official proofreading services, if I do notice an error, typo, question, inconsistency, or other problem, I make a note of it, and then email you a list of notes, free of charge. This provides another set of eyes on the project. My clients usually find this service very helpful, and I almost always find something that was missed.