郵送料を教えていただきありがとうございました。商品+郵送料の金額に問題はありませんので、改めて請求書をお願いします。親切にありがとうございます。
Thank you for letting me know how much the shipping charge is.
There is no problem with the total amount of item price and shipping charge.
Please proceed with it and issue an invoice.
Thank you very much for your kindness.