The OP referenced Diving Regulators as a model and yearly service intervals. What would you feel is an acceptable fee to have a binding dis-assembled, re-greased and cleaned and re-calibrated? I'm asking. Would this be a 'give away the razor to sell the blades' situation?
If I was given a free binding, I would be happy to pay $80-$100 for this service with every 30 hours' use. Provided they also run ultrasonic crack checks on the casing.