Sanguan,
It's been a while, but hopefully I can help a little. I spent about 6 months in NZ a few years ago getting a CPL. I always remember the massey school as it sounded like a bit of a rip off compared to the more traditional flight schools. Massey's course is a Uni course, taking three years giving you a degree at the end of it as well as a CPL/IR, but as you've found out, costs an absolute fortune as your got to fund three years of Uni study aswell as fund a full CPL/IR.
A tradational flight school will do the CPL/IR in about a year full time. I can remember of 4 schools that I applied to. They were located in Wellington, Christchurch, Nelson and Auckland, although there now maybe more. Each offered the course (admittedly this was priced two years ago) for around NZ$30,0000. It's probably gone up a bit since then, but probably not far outside this cost.
Also, I maybe mistaken, but some of the NZ students at the school I attended had some sort of Grant or Loan to fund part of their training, but I'm sure that any school will be able to give you advice for funding if you approach them direct.
The flying in NZ is awesome and doing some x-countries through the southern alps was something I'll never forget in a hurry.
