This is for payment of the Canadian VAT fee required by their customs ONLY.
According to law, you are required to pay VAT Fees in relation to the cost of the item purchased + an additional $9.95 inconvenience "surge charge" Fee.
This option will cover all those fees regardless of what the amount is. This will save you a ton of money and time as your item is delivered to your front door. No more customs
No Additional fees will be required to be paid to customs or any other agent.