Not that I have ordered from Elitekeyboards before, but I'm really grateful that there's this webstore that specializes in something we Geekhackers can look forward to.
http://search.rakuten.co.jp/search/mall/realforce/-/?c=2836&l-id=s_search&x=0Just a random search on popular Japan sites on Realforce products.
You can try Amazon.co.jp as well.
Standard Realforce ranges from 18,000 - 22,000 yen so the price difference isn't that much.
Average price for the 87U 55g is around 24,500 yen instead so Elite's price are pretty hard to beat, judging from the fact that he provides warranty as well.
If only his international shipping is less expensive.