A BMW R 18 Classic averages €21,554 across all model years. Right now 6 are listed for sale, with the cheapest sitting around €15,945 (typically older years) and the priciest around €33,567 (recent years). The median is €19,425. A good price for a BMW R 18 Classic is under €16,862; anything over €23,572 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €14,569 to €17,482 for this model, depending on year and condition.