I went to see a 1 owner (according to the dealership) 2009 C63 with 160000 KM, from a non MB dealership for 26000 €.
Car looks in really good condition for 160000 KM, the dealership is also going to put on a fresh set of tires, fix the rims since they have a lot of curb rash, give it another maintenance before selling and a commercial vehicle conversion (so it has way cheaper road taxes here in Belgium).

How exactly would I know if the head bolts have been replaced? I can't find anything about them on the maintenance history (see below) and assume they would have failed by now if they haven't been replaced.
Is it a bad idea to buy a C63 with this mileage? From what I have read online this engine is pretty solid as long as it is maintained well.
Would you also say this is a fair price for the car?
VIN is WDD2042771F396394