Okay, I didn't read through all of the clay bar thread, so I don't know if it was explained there, or if its even related, but, uh....
What happened?
And why don't you just take it to a BMW dealer or something, or some other high priced body shop? They almost ALWAYS give free estimates, cus they know its usually the insurance company thats paying and that you probably wont shop around.
Since I'm guessing you got rear-ended, then I'm going to guess its either very minor (Bumper + respray + mabye tail lights) or major (tiniest crinkle in the rear body will total cars worth what ours are).
Wait, I think I get it - you wanted to claybar the car so it looks like money, so if the adjuster totals it, its worth more?