The fellow who runs the site, "Karr," replied to my email:
The forwarding is possible.
Are you able to use paypal?
I am during a business trip.
> I am in the US, and I hope you speak (or read) English. I am
> writing about a puzzle shown here:
> No. 15, the Rainbow Cube. Do you sell these? Please let me know.
Can anyone here speak Japanese fluently enough to converse with Karr? I'm worried something horrendous will get lost between tongues. The price on the Rainbow Cubes isn't bad--roughly $23 at today's exchange rate.