I was poking about the interwebs the other day looking for a Silky Nata (Japanese machete/brush clearing tool that I want for trail work) and a vendor I found seems to have nice prices for Japanese domestic market stones that he'll ship anywhere:
C. Ellison - Water Stones - Other .
Just wanted to pass it along, as I recall seeing a couple threads in recent months for our brothers in the EU/UK/Etc looking for hone sources.