Here's the latest version, available at The Quilt Place:
http://webstore.quiltropolis.net/stores_app/Browse_dept_items.asp?Shopper_id=11511142215551151&Store_id=658&page_id=17
I bought mine there a year or two ago while passing through.
It's all they for cutting fabric in the shop.
At the time, they were the only place in the US that carried them.
It took them awhile to put it up on the web - I kept sending people to the site with no luck - until they had the right size boxes to ship them in as the ruler is longer than a priority box.
I recently noticed a few other shops are selling them as well (but all for the same price).
Pricey, but useful.
Unfortunately, no coupons.