Native US Proofreading & Editing

Several documents on my desk need a final polish from a native‐level U.S. English speaker. I want more than a spell-check: every sentence should read naturally, stay on message, and reflect an authentic American tone... (Budget: $8 - $35 USD, Jobs: Content Writing, Copy Editing, Editing, English Grammar, English Spelling, Language Tutoring, Proofreading, Technical Writing)