I would have said. "Ok, 30% of the product relies on insider knowledge. You can have that for free. How much is the remaining 70% worth to you?" Apple wasn't

I would have said. "Ok, 30% of the product relies on insider knowledge. You can have that for free. How much is the remaining 70% worth to you?" Apple wasn't paying for the same insider knowledge of their platform's functionality that they already had; they were paying for the additional work that created new functionality. I don't see any reason why he shouldn't have asked for as much as he thought the product was worth.