For Nokia, the hardware cost is not high, but the system are developed by themselves, this cost is high. Overall, not very well expressed data.
But one of the waterbenders in our group said there are no new 5800XMs at all now.
Not recommended.
The Smartphone Gamers Alliance team has the answer for you. I'm sure you'll be able to find it.
If you still have questions, you can ask them directly in the official post of the team.