Inline Sci-Fi Beta Reader Needed

I’m ready to hand over the opening 50 pages (≈12 k words) of my science-fiction novel and pay $75 for a sharp beta read. Please work directly in the manuscript—Word with Track Changes or a Google Docs comment thread is fine—so I can see your thoughts exactly where they occur... (Budget: $30 - $250 USD, Jobs: Beta Reading, Book Writing, Content Writing, Creative Writing, Editing, Ghostwriting, Google Docs, Proofreading, Word Processing, Writing Tutoring)