The purchasing price is $16.12 USD. When I examined the carriage, they were 670 yen($7.169 USD) in total in airmail and the registered mail. Sending by air mail is 260 yen($2.782 USD). However, it doesn't contain the tracking service. Is it good when sending merchandise by which method? Only the package photograph can be sent because there is no delivery certificate for airmail (There is no tracking service).