I'm looking to get the sirius satellite radio done in my car, but after searching the threads, it seems like people are getting different deals. I know 2006 e60s and up come pre-wired, but how much did you pay for your satellite radio itself? I hear around $450 or so currently, and some people say 2 hours labor, others say 3 hours. What does the official install instructions say?

And what kind of deal did you get for additional years? I heard that the first year is free, but I'm seeing that people are getting all kinds of deals for extra years when they initially activate it (i.e. extra yr for payment of 9 months, or $129 for extra 2 years, etc.)