Originally Posted by wildkitten
You may be able to buy just the board with the camera on it. If you look over at iFixit, their video show's that the S4 is very modular and very easy to repair. This could be something that you can do yourself if you buy a camera board.
Replaced one on a relatives Bionic and it was a piece of cake. Just searched around online and found what was needed and a guide to replace it. Might have cost him like $25.