Can I pay a professor for revising my paper? I have written a manuscript but cannot find someone to help edit it, but I want to submit to a good conference. So can I pay an unacquainted professor to help revising my paper?
Thanks!
Yes you can pay someone to edit your work. It doesn't matter that it is a professor or not. But a professor might rather want to become a co-author than a paid editor. If the other person contributes content it might be a more valid thing to do. 

You would need to acknowledge such help in any case, I think.