Paid to Proofread question

I have recently discovered that I love proofreading. I am willing to do some for free, as I live to read and really enjoy it. But I am wondering if there is a way to make some money at it? I was thinking of charging 33cents a page, regardless of how many words are on the page. Does anyone have advice on this matter? Or better yet...Are their any Indie Authors out there looking for this to be done and are willing to pay a small fee? I would even consider doing it for the hard cover version of the book.