Welcome to Geekhack.Thank you for the welcome! I have been lurking for a good while, specifically to look for something to improve upon my old faithful HH2 Lite. But I'm not exactly immune to mice, trackballs, etc. either. :-)
I'm not in the EU but first thing I would do is have your friend ask his friends in Japan where they shop for electronics stuff. I've seen pics of these high end keyboards just sitting on a retail shelf. Even some pics of display models (wish we had that). Buying retail (if they are in a big city) would be simplest. That also solves the payment issue since then all you'd have to do is hand your friend cash.My friend is not a electronics/hw enthusiast, and I can't assume his local friends are, either. If only the payment side works out, then it's certainly simpler for him to put in a mail order (pre-armed with a shop URL and exact product codes) and receive a delivery, than to take the time to locate and visit a brick and mortar store which carries the right stuff and has it in stock. I don't like to impose upon people any more than I really have to.
I always use a Capital One credit card overseas since it doesn't add the normally obnoxious 3% automatic upcharge for foreign transactions. If you do use a credit card be sure to call them first and check charges. Also, sometimes if a credit card is used overseas the credit card company sometimes freaks unless you warn them first.3% is nothing, frankly. Having my friend carry the stuff over in luggage saves at least 30%, if not 40%, compared to ordering it direct. (And legitimately, AFAIK. The customs rules are considerably different for luggage.)
Honestly, if you're THERE, then you need to go to Akihabara "Electric Town". I know of a store there named Clevery [ クレバリ ] that has most Filco models and at least 100 other keyboards that you can touch.
Here is a page from their website with photos of the store:
http://www.clevery.co.jp/shop/shop-2.html
For example, Diatec offers 2 options other than credit card payment inside Japan.Great! Looks like there are no real obstacles left. Now to find a 87U roof...
op1, 代引き;daibiki means Cash on Delivery ( c.o.d.charge is required ).
op2, Pre-payment through bank
Many online stores offers another option; pre-payment through so called コンビニ ( convenience stores such as 7-11, Family Mart and more ).
I'll be thinking of you guys when my son and I go tour the keyboard shops.Show Image(http://3.bp.blogspot.com/_QeML5S8nsDA/Sc93trMLMeI/AAAAAAAANNo/5BXxspLg4OA/s400/6a00d83451632e69e2010536cf6f26970c-800wi.jpg)
You left your webcam on.
I'll turn mine on.Show Image(http://www.macupdate.com/images/screens/uploaded/25358_sm.png)