Cost of living in Enschede (Netherlands) is 95% more expensive than in Łódź (Poland)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 310 prices entered by 29 different people.
For example, you would need at least 17,711 zł (€4,130) in Enschede to maintain the same standard of living that you can have with 9,100 zł in Łódź.