Without looking at pics and knowing the specific condition of the watch, I believe you will not be getting an accurate quote here...
Send it to the service centre, let them have a look at the watch and quote you a price on what needs to be replaced and serviced.
I think even with pictures, no one here can give an accurate quote unless we're working for Breitling or we have a pricelist of all the Breitling parts and service charges handbook lying somewhere...