Can you teach me how to order online in Korea?

I want to send my boyfriend a gift, but i I can't because he is living and studying in Korea while I'm living and working in Vietnamese Vietnam. Can Aanyone who is living in Korea, can you teach me how to order something online to be delivered in Korea? (Since you aren't in South Korea right now, you'd say that you want something to be delivered to someone in Korea, rather than that you want to order something online in Korea.)

I'm not sure which companies ship to South Korea. I bet you can find more answers if you ask a question in the Korean section!