Apple

I recently got an iphone 13 for free and the service is $80 through Verizon. I have passed the 30 day return and exchange policy to get it returned. Now I have to either pay $629 for the device which does not make sense. How can I go about selling the phone where all I have to do is transfer the account holder to someone else where they can get the phone for free but just still have to pay the $80 per month to verizon