your looking at around $300 but in order the the phone to meet Samsung's dust and water protection for warranty then it has to be done by their recognised service center.
or you could try phoning around and get a replacement from a used phone. Not sure how it affects warranty, but the upside is that you can have it replaced in its frame and won't mess with the glue around the frame and have it within the hour. The phoning process and deciding is the hard part.
