Hi,
This is Filippos from Greece.
Where I work we write all documents like offers, reports, manual in ms word. Often if document has repeating patterns, like similiar equations, we convert them to latex, with macros.
Usually I convert 3-4 pages documents with headers, footers, logos, images, chapter, ttf fonts etc.
I charge 8$/h so we talk about 20 hours work or 10hours to make formats and 10hours to work on text, chapters, tables, equations.
Above number may change based on text. Most important is to know the type of text and secondly the number of pages.
Best Regards,