Consolidate Word Documents Precisely

I have several individual Word files that need to live together in a single master document. I want every piece of content moved over exactly as it appears now—headings, tables, images, styles, the lot—so the new file is a faithful replica of the originals... (Budget: $250 - $750 USD, Jobs: Copy Editing, Copy Typing, Editing, Microsoft Office, Microsoft Word, PDF, Word, Word Processing)