How to make an extra payment:
1. Change the "Quantity" to an appropriate number. For example, if you want to make $7 extra payment, change the "Quantity" to 7. The total payment will become $7($1x7).
2. Click "Add to Cart" button.
3. Proceed the purchase as usual.
If your extra payment includes changes(cents) like $7.18, please ignore the change($0.18) and enter the dollar amount($7) only.