A BMW R 18 B averages €27,180 across all model years. Right now 4 are listed for sale, with the cheapest sitting around €21,945 (typically older years) and the priciest around €32,374 (recent years). The median is €27,200. A good price for a BMW R 18 B is under €23,824; anything over €30,556 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €20,400 to €24,480 for this model, depending on year and condition.