The %30 cut is for digital goods sold via Apple's stores, such as the AppStore, iTunes, iBookstore and in-app purchase. Physical goods have never had any kind

The %30 cut is for digital goods sold via Apple's stores, such as the AppStore, iTunes, iBookstore and in-app purchase. Physical goods have never had any kind of a restriction or revenue split. Today you can go to the amazon or target app and buy physical goods using a credit card and Apple's cut of the sale is %0. This just makes it easier and more secure for apps to take credit card payments. I think Apple may be getting a cut of the credit card fees when this happens, but that's between Apple and the card companies.