わたしはあなたに$51.85を支払った他、あなたが利用した国際配送会社に$23.49を支払っています。Full Refundということなら、合計額の$75.34を返金してください。返品の際の送料は私が負担します。
I have paid a total at $75.34 including the item price at $51.85 to you and for the shipping fee to the international delivery service company you designated at $21.49. If you say to issue the full refund, please pay back to me at $75.34. I will shoulder the shipping fee for returning the item.