I recently used amazon to buy some apps and when i want to use in app purchases it comes up with amazons in app purchasing system not google's. I was wondering if there was a way of switching the app to google's. Thanks.
I don't believe that's possible because when the developer created the app and implemented in app purchase he chose to put amazon services since the app is on amazon. You can't change it yourself. If you buy the app from google play than you will be able to use google to pay.