Available from PFU directly in China from now until June 20th, blank black/white HHKBs are available for 1100 CNY ($172/145 EUR as of today), and can be shipped overseas either via proxy or individually. This is a pretty big discount over the current Amazon US price of $222, even if a proxy is used. The official page is
here on taobao, hope someone gets a good deal. The printed versions are more expensive than abroad though, while the Type-S is about the same.