A KTM 990 Super Duke averages €5,368 across all model years. Right now 10 are listed for sale, with the cheapest sitting around €4,000 (typically older years) and the priciest around €6,495 (recent years). The median is €5,492. A good price for a KTM 990 Super Duke is under €5,012; anything over €5,836 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €4,119 to €4,943 for this model, depending on year and condition.