Echigoya are about to open a more internationally friendly website with the intention of taking orders from the western world. Their new international order website will be http://www.echigoyaint.com, although I should point out that there’s nothing there for the public at the moment.
There’s no details when the website will be opened to the public completely (although a good guess would be that something should be live by Friday), but it’s worth keeping an eye on as the more shops in Japan that are happier to take orders form outside of Japan the better.