That's just ridiculous. I can't imagine anyone paying that kind of money to rebuild a $4000 bike. DIY would probably save you close to 50.000 bottles of Grolsch beer.A complete custom rebuild for a CNW Commando is $20,500. This price assumes that you will be providing an intact donor bike. Most Norton Commandos are sound re-builders, but hidden problems may exist in the frame, transmission or engine. After a thorough inspection of your donor bike, customers are notified of the final price of the rebuild before any work commences.