Copyediting, proofreading, and ghostwriting for nonfiction
We help writers say what they mean.
Proofed & Proven is a Tulsa editorial company that copyedits marketing and academic content and ghostwrites nonfiction books. I’ve copyedited travel copy for Travelzoo for five years, and my clients include BetterHelp, dLocal, and researchers publishing in Frontiers in Neuroscience. Copyediting starts at $55 an hour, and a ghostwritten book typically costs $5,000–$7,500.
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Services
Marketing copyediting (AP style)
Blog posts, ads, web copy, case studies, and white papers, copyedited and proofread in AP style with tracked changes back in two business days. Start with four pieces for $450.
See marketing copyediting plans.
Nonfiction ghostwriting
A book written from up to 10 hours of interviews and the content you already have, such as podcasts, talks, and newsletters. You approve a first chapter before I write the rest. A typical 25,000–50,000-word book costs $5,000–$7,500.
Academic and book editing
Copyediting, line editing, and proofreading for dissertations, journal articles, and nonfiction manuscripts in APA, MLA, AMA, or Chicago style. Copyediting is $55 an hour or $0.035–$0.045 per word.
About Nicole Halper
I’m Nicole Halper, and I founded Proofed & Proven in Tulsa in October 2024. I studied physics at Colgate, started my career as a physics teacher, and have edited professionally since 2021. I work in AP, Chicago, APA, MLA, and AMA styles, and I’ve edited for Travelzoo, Unisys, BetterHelp, and Andrews McMeel Publishing.
I started this company to help activists, academics, and authors with a social justice focus get published, and they’re still the writers I most want to work with.

Who I work with
- Marketing teams publishing blogs, ads, case studies, and white papers
- Founders, consultants, and speakers who want a book written from their expertise
- Doctoral students and researchers publishing dissertations and journal articles
- Nonprofits and think tanks publishing reports and research
- Nonfiction authors preparing a manuscript for a publisher or self-publishing
- Poets preparing a collection
Frequently asked questions
What does Proofed & Proven do?
Proofed & Proven copyedits and proofreads marketing, academic, and nonfiction book content, and ghostwrites nonfiction books for subject-matter experts. Nicole Halper runs it from Tulsa, Oklahoma, and works in AP, Chicago, APA, MLA, and AMA styles.
How much does copyediting cost?
Copyediting is $55 an hour or $0.035–$0.045 per word. Line editing is $65 an hour or $0.05–$0.06 per word, and proofreading is $45 an hour or $0.03–$0.04 per word. Marketing teams can start with four pieces for $450.
How much does it cost to ghostwrite a book?
The rate is $0.10–$0.15 per word. A typical 25,000–50,000-word nonfiction book costs $5,000–$7,500, including up to 10 hours of interviews, an outline, and a first-chapter audition you approve before I write the rest.
How fast is turnaround?
Marketing pieces come back in two business days. Manuscripts under 10,000 words take less than two weeks, and 30,000–60,000 words take three weeks. Rush delivery is available for 50% or 100% more.
Do you edit fiction or memoir?
No. I edit nonfiction and poetry only, and I don’t take novels or memoirs.
Send me a sample
Email a few pages to editing@proofedandproven.com, and I’ll show you my edits before you commit to anything.
