Those sound like reasonable prices from benz that you got.as long as they do the work proper.My dad has a 84 500 sel ,german version.I noticed driving it that it sure has more balls than the north amercan version.It looks good from the outside ,but to bad it is a piece od sh-t underneath.But as long as he is happy is all it counts..And believe those cars are build solid.Even with out an airbag you will be safe