The full fee is $1600.
The additional $10 fee added to this online purchase is to help cover approximately half of the fees charged for processing online. 
For your records, please note this payment is paying $800 toward the balance of $1600. Not $810 toward the balance of $1600.
 
We are sorry, but there is nothing we can do. 
 
Please also note, this will require making this payment twice before full payment deadline.