From country to country, even within the EU, living expenses often differ widely. Health insurance might be relatively inexpensive in a country but property taxes relatively high. It would not be wise to assume, based on a general knowledge of the Netherlands, what your cost of living is likely to be. Wherever you are coming to Delft from, expect to be surprised at times about finances and living costs in Delft, sometimes pleasantly, sometimes not.
The information here is intended to give you an idea of what it will cost to live in the Netherlands and provide you with links to online resources that will help you to refine your understanding. It might also give you an idea of the kinds of choices you will find yourself having to make as you settle in the Netherlands.