There was a 4x5 enlarger on TradeMe just recently.

As for importing stuff (film, cameras and lenses), I buy from Europe and the US (shipping prices and VAT deductions can make it cheaper from Europe). If it's under $400 (iirc), there's no GST to pay. Above that, you may end up having to pay GST, but not always. I've not had to pay GST yet...