I think the two places to check in order to see what's available secondhand are trademe.co.nz and facebook marketplace. Even if you plan to bring most things, it's nice to get a general idea of what's available and market value. Things are a lot cheaper secondhand here in Taranaki compared to Auckland, which is good unless you are selling things off :-P I find that after a few months doing without my stuff, my idea of what I actually need changes. Definitely trimming down on clothing, especially the kids' stuff. The washers and dryers are on average quite a bit smaller, so more frequent washing is the way of things.