10. We would be happy to refund you the difference as described below: Date You Paid New Difference02/12 30 25 -502/13 30 25 -5 02/14 30 25 -502/15 30 25 -502/16 30 25 -502/17 30 40 +10 Total $15 Owed please let me know if there are any other questions or concerns and I would be happy to assist.