I took my '03 X5 to an independent BMW service center today for my 100k service. They are doing the following:

Fuel Filter - $199.95
Spark Plugs - $213.50
Differential Service - $75.00
Transfer Case Service - $75.00

They also advised that I had a broken throttle boot that needed to be replaced and quoted $149.95 to replace it.

How does this compare to what you guys have had done? More/less items and what did you pay?