Yeah, I know, crazy late reply, but I thought I'd post anyhow. You can get it (given that you have a credit card) here: http://www.aladdin.co.kr/home/start_us.aspx/ That's Aladdin's US site. Signing up is relatively easy. And obviously, when you're searching for manhwa, you search using Korean.
If you live in or near a big city like NYC or LA, you can get free shipping. Just choose shipping to an Aladin branch store & in-store pick-up. This way, your order from Korea will arrive by air in 3-4 days, and you can pick up at your convenience. The store will notify you of your order's arrival by phone/sms/email. saved me oodles and bundles by doing this.
________________ Take your stinkin paws off me, you damn dirty ape!