Unfortunately, the app has been pulled although the listing still appears in the Android Market. So far, no official explanation has been made as to the reasoning behind pulling the app. Luckily, a video was made before Google Body disappeared.
We're sure that the app will return shortly, it is just too well done and too educational to just let die. And yes, a version using the male human body will be available shortly. When it was up, the app was available for free.
source: AndroidMarket via AndroidCentral