I'm one of those lucky few who live near video store which not only carries these films (they actually have separate sections devoted to classic sci-fi and classic horror) but subtitled tapes of the original Japanese prints, in the original aspect ratio. You can really appreciate an intelligent and lavish production like Atragon when you watch it they way it should be presented.
I stick with recent, licensed releases. They're easy to find now...I get most of mine from the mall, or Amazon.