The Kawasaki J Concept is a concept motorcycle that was unveiled by Kawasaki at various motorcycle shows and events. It is important to note that concept motorcycles are not typically available for sale to the general public. They are often created by manufacturers to showcase new design ideas, technologies, and concepts.
As a result, there is no fixed or standard cost for the Kawasaki J Concept since it is not a production model that is commercially available. The J Concept was introduced as a concept bike and may not be available for purchase or have a specific price tag associated with it.
If you are interested in a specific model from Kawasaki's lineup or have any other inquiries, I would recommend visiting the official Kawasaki website or contacting authorized Kawasaki dealerships for the most accurate and up-to-date information on pricing and availability.