bellows replacement

I have a 1996 Chaparral 2130 with a Alpha one Gen 2 drive. Never had the bellows replaced. looking for an average cost for the service, recommendation for a mechanic mobile or fixed. I would probably have the gimbal checked at the same time. I have a trim sensor kit that needs to be installed (figure do it at the same time)Right now everything is perfect with the boat, no leaks no issues, but just preventing something in the future.

thanks for the feedback and recommendations

Always replace the gimble bearing when in it that far. Parts and labor 7-800.00 and I quit working on inboards 2 years ago.

thanks for the reply