It depends on how many copies have been sold, and what the support costs are likely to be. If he's only sold two copies, then it's not going to be worth packaging it up.
Don't forget, it's already packaged up. It's in the app store already.
The author can spend the next ten minutes logging into his apple account and adding a price to it. That's all the effort needed to turn this into a product (besides rewriting the App Store description so that people other than himself can parse what the application actually does).
