App info is currently processing and/or the app is not yet fully available for sale on the US App Store.
Yeah, it's funny how software prices vary drastically based on supply/demand. I mean, if you didn't know that AAC devices cost thousands of dollars, then an app like this wouldn't go for more than $10 tops, but instead they can price-gouge.
This is the #41 Top Grossing App in the store. http://appshopper.com/bestsellers/grossing/?sort=price&dir=desc The only 99 games making more money are Frogger and FAST http://appshopper.com/bestsellers/grossing/?sort=price&dir=asc