Cost of living in Brisbane (Australia) is 149% more expensive than in Łódź (Poland)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 2,297 prices entered by 285 different people.
For example, you would need at least 17,179 zł (AU$6,221) in Brisbane to maintain the same standard of living that you can have with 6,900 zł in Łódź.