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We can determine if an IAP is using SandBox mode based on the Boolean parameter "isSandboxMode" of callback method onSdkAvailable(). As per the documentation, onSdkAvailable(boolean isSandboxMode) - This callback is invoked once you register your PurchasingObserver with the PurchasingManager - This method tells you if the Purchasing Framework is running in sandbox mode with test data, or in production mode with real data - If your app is downloaded via the Amazon Client, isSandboxMode will return false - The initiating method should be called within the onStart() lifecycle method If an IAP is running in SandBox mode, then the isSanboxMode Boolean will return true. Complete documentation on IAP API's is available at https://developer.amazon.com/sdk/in-app-purchasing/documentation/developer-guide.html