As reported by All Things D, the iPhone 5s is selling at a 2 to 1 ratio compared to the iPhone 5c. Some think this could spell trouble for Apple. But remember, when rumors of a lower cost iPhone was in the works at Apple, people were wary about this because it could put an end to high profit margins. Now the iPhone 5c is out and is not a low cost phone, people are wary because they think Apple is not addressing the lower end market. But the higher end iPhones are selling as fast as Apple can produce them… a product with higher profit margins. The bottom line is this: Apple will again make a truck load of money.
The only problem I see here is that Apple may have produced too much 5c and not enough 5s. This would lead to a worst than expected sales of iPhone for the next following weeks. Apple will adjust to this over time.