Hello Doug,
Steve started an Edward Yang memorial post that lists which Yang movies available for home purchase:
http://z8.invisionfree.com/MHVF/index.php?showtopic=7964 Also, if you have a local Taipei Economic and Cultural Representative Office (TECRO or TECO) in town--and Oz does have one--you can call them up and they'll send over 16mm film prints for a public showing. For free. See:
http://www.teco.org.au/main.htm The movies, not limited to Taiwanese New Wave, are almost always English subtitled. From prior experience, the folks that staff these quasi-consulates are friendly and easy to work with. In fact, I wouldn't be surprised if they didn't have a hand in the Auckland retrospective. I must admit that most of the Edward Yang films that I've seen came from screenings made via local TECRO print leases (and they even provided the projector on occasion!) that, I re-iterate, do not cost a penny. A really neat, under-utilised resource if you're willing to make a phone enquiry.