Apple doesn’t ban sales of eBook, but claims that those are software and would apply a 30% processing fee to them like on all virtual goods. They also demand th

Apple doesn’t ban sales of eBook, but claims that those are software and would apply a 30% processing fee to them like on all virtual goods. They also demand the price to be comparable to other sources, so Amazon has to decide between 1. taking a 30% hit on its iOS sales, 2. forgoing them, or 3. raise its prices of eBook by 30% on its main app. There are enough few enough iOS sales, and free sample downloads lead to enough conversion on the website later to go for 2. Apple doesn’t make the same claim on physical goods.