After reviewing all the option packages for the 2007 X5, I asked a dealer to give me two quotes:
1)Leather, technology package and premium sound package.
2)Leather,technology package and sport package.

For the first one, I receive a quote of $56,884.13 including tax and dealer fees.
For the second one, a quote of $57,884.13 including tax and dealer fees.

I replied to them with those figures: 49000+tax for the first one and 50000+tax for the second.
I am waiting for their probable response.
I am not a good negotiator and I don't want to pay too much for the car. Please help decide on a good and fair price.