Usually the previous phone version is dropped to $100, not free. So what we would expect without the 5c is: 5s - $200, 5 - $100, 4s - $0. They've just replaced

Usually the previous phone version is dropped to $100, not free. So what we would expect without the 5c is: 5s - $200, 5 - $100, 4s - $0. They've just replaced the 5 with 5c.