For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
I´d like to know if you had any experience about that or the worse experience that a customer gave you in any single way and how you solve the situation.
Just put it in your contract that "price includes transfer of ownership of any salvagable parts for repair. All non salvagable parts will be recycled".