Proofreading and Editing
For years I have been doing proofreading and editing for various clients, whether it is for academic theses or business presentations etc.
30 € per 1hr (which is about 3-5€ per page). That includes not only correcting your grammar and punctuation but also making suggestions for alternatives.
For a free estimate, please send me the text (or an example): josepheren1@gmail.com
Alternatively you can post and share your text with me on Google Drive. There, I can either edit it directly or make suggestions for edits, then you can decide whether to accept or reject my suggestions. It's very easy to use.