Why is this still on the App Store for "free"?

So I downloaded this "free" app only to be redirected to the iTunes store within this "free" app to the $34.99 version of "Unbound Medicine, Inc. version of this App. Dont waste your time downloading this "free app". This should be removed from the App Store".

Brandy B. about The Merck Manuals - Professional, v1.8