A KTM 125 Duke averages €4,777 across all model years. Right now 20 are listed for sale, with the cheapest sitting around €2,499 (typically older years) and the priciest around €6,590 (recent years). The median is €4,848. A good price for a KTM 125 Duke is under €3,855; anything over €5,740 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €3,636 to €4,363 for this model, depending on year and condition.