ADV Films has released the movie on VHS and DVD; the former, naturally, lacks extras, though the latter isn't much better, merely having character biographies and a screenshot gallery, and lacks a Japanese language option. For whatever reason it's gotten ludicrously expensive lately, nearing almost £40 when it should really go for no more than a penny. If that. Diss.
Amazon US: ADV Films DVD
Amazon UK: ADV Films DVD