A KTM 640 LC 4 averages €4,500 across all model years. Right now 1 are listed for sale, with the cheapest sitting around €4,500 (typically older years) and the priciest around €4,500 (recent years). The median is €4,500. A good price for a KTM 640 LC 4 is under €4,500; anything over €4,500 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €3,375 to €4,050 for this model, depending on year and condition.