I've had Invisaligns for 9 months and I've 9 months to go. I'm moving to another country. The cost was 6,000, paid as a down payment followed by monthly payments. I still have 2,000 to pay. My orthodontist told me topay the remaining 2,000 and she would give me the remaining trays and my file to give to my new dentist. I don't think this is fair. The 6,000 includes overhead fees which she wont have to provide once I'm gone. What would be a fair negotiating price for me to pay for only the trays?