Current price for new current model boxes $780. The box that mine has is pre service letter style so it only has a single molex connection and the rest of the wires are loose cost is $1350. So the older you go the more expensive. According to Kevin Kane (certified Rotax service guy)at CPS all boxes are the same as far as how they work. Newer ones may require some de-pinning of the connectors to fit your model. However he told me to give Ronnie smith a call. See previous comment in this post for his numbers. He had a couple of used one for $500 each. Rumor though that rotax is planning another ignition module design change soon.