The estimated shipping time through standard international mail is typically 2-3 weeks, but depending on the distance of the country from South Korea, it could take less than 2 weeks or longer than 3 weeks. Please do notify us if your order is taking too long, but the vast majority of our customers get their books safely, so please allow for a little bit of delay that might sometimes occur. You can contact us using our contact us link at the bottom of the website.