Cost of living in Christchurch (New Zealand) is 142% more expensive than in Aizawl (India)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 501 prices entered by 54 different people.
For example, you would need at least ₨70,287 (NZ$1,485) in Christchurch to maintain the same standard of living that you can have with ₨29,000 in Aizawl.