I just need a little help with some info on 550's Iam thinking of buying but wanted to know 3 things if anybody can help. 1, what was the list price of a 1999 550? 2, how much does a 15k service run and what needs to be done? the car has a lot less then 15k but it is now 5yrs old. 3, what seems to be the market price of a low mileage 1999 550? any help would be great. thank you.