If you charge Nokia more simply because they are Nokia, there is something flawed in your business logic. The reason being, you should be able to price a product for the amount of resources it will consume (time is one of these). Their requirement for that particular piece of software should go into it. If they have support requirements, quote separately for this. At the end of the day, Nokia have a budget when putting together a request for proposal. The reason very few software development companies have stood the test of time in Kenya is, in my limited opinion, due to such opportunistic approaches. It's good for the short term, but in the long run, not necessarily the best as you quickly get the reputation of a profiteer and lose repeat business...