I will help you route (up to 6Days) self drive to some of Japan most well kept regions depending on where you start and end your trip for $5.
7-14Days at $15
Anything more than 14Days will be flat at $25.
I can also help to arrange for accommodations and car rental plus special traditional activities(if available in that place of visit) too.
Check out my other service with plan your trip with Japan Rail.