I studied some topic about InAppPurchasing and confused with several classes such as Xamarin.InAppPurchase, Xamarin.InAppBilling, .. etc. Also I see XamarinTeam users says: "Unfortunately we are having an issue with the component", Kevin Mullins.
Please help. Maybe you have some examples with implemented in app purchases for Xamarin.Android?
And what is this error: "Android resource directory google-play-services/libproject/google-play-services_lib doesn't exist. GooglePlayServicesApp"