Let me put it this way. My 08 M5 went for over $140k Canadian. I would estimate that today with 14,000km on, it is worth about 80k. I would be happy to pay 5-8k to get the upgrade to the new idrive because it is a world of difference and being a technology geek would make me such a happy camper... not to mention I have no interest in buying the new 2010 model just to get those gadgets and start the depreciation dive all over again.
I am happy to fund this project and do whatever we need for someone who has knowledge and skills to pull this off; then do it for my car hehe