I currently work as a college writing instructor. I have been a freelance writer/editor for over 7 years with experience in entertainment journalism, blogging and academic writing.
For basic editing/proofreading I charge $2 a page. With general advice on structure and development included.
Larger, creative writing projects run $25-$30 an hour, depending on what is involved.
Product descriptions, captions and other "smaller" tasks cost $0.01 per word.
I have many years experience in education, writing and editing. I am quick and reliable.