Having received your paper I couldn't state a price immediately as stated in my initial e mail. I didn't repeat this point as I didn't want to appear condescending. I have proofread some 20page papers (average length excluding references) in 2hrs as there was very little wrong with them but others have taken up to 10 hours. So far I have spent 5 hours on yours and it would need another two to complete.
For information, if I was to decline your work, I would have let you know as soon as possible. I wouldn't ignore a request as it is unprofessional and not in my character.
Best of luck with your paper.