Price seems about right given the mileage and location. Spring for a PPI (pre purchase inspection) at a dealer or independent MB Tech not associated with this vehicle, preferably someone you trust. The PPI may give you some ammo for further negotiation.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.