A Mercedes-Benz C 55 AMG averages €21,250 across all model years. Right now 2 are listed for sale, with the cheapest sitting around €20,000 (typically older years) and the priciest around €22,500 (recent years). The median is €21,250. A good price for a Mercedes-Benz C 55 AMG is under €20,625; anything over €21,875 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €15,938 to €19,125 for this model, depending on year and condition.