I know a few of the members have used buying services for keyboards from Japan and Korea.
A couple off the top of my head are:
http://www.thebestbuykorea.comhttp://www.celga.comI have read mixed reviews about Celga, and haven't really read much about thebestbuykorea.
They take PayPal and usually require 100% deposit before they order the item.
Then they require you to pay for internal shipping, internal taxes, then they charge you a fee for their service, next is international shipping and of course you will get charged duties for bringing the item into your own country.
All in all, it is an expensive process but it will get you the item you desire.
It is just a matter how badly you want the keyboard haha.
I should mention, I am in no way affiliated with these websites.
Also, I am in the process of getting quotes from both Celga and thebestbuykorea but hoping friends and family in Japan and Korea can help me out, rather than these deputy services.