A Kawasaki Ninja 400 averages €5,991 across all model years. Right now 8 are listed for sale, with the cheapest sitting around €4,500 (typically older years) and the priciest around €6,999 (recent years). The median is €6,225. A good price for a Kawasaki Ninja 400 is under €5,375; anything over €6,615 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €4,669 to €5,602 for this model, depending on year and condition.