A KTM 640 LC 4 averages €4,300 across all model years. Right now 1 are listed for sale, with the cheapest sitting around €4,300 (typically older years) and the priciest around €4,300 (recent years). The median is €4,300. A good price for a KTM 640 LC 4 is under €4,300; anything over €4,300 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €3,225 to €3,870 for this model, depending on year and condition.