Does it cost to print in the library? If I need to print many pages should i bring my own printing paper?

If you're visiting Turku city libraries on normal opening hours then you don't need to bring any printing paper with you. It then costs 20 cents per page to print (i.e. 40 cents per double-sided printing). The price is the same whether you print in color or in black and white.

If, on the other hand, you are visiting one of the branch libraries during its open hours when there's no staff present, then you actually do need to bring your paper with you. At this situation there's no additional fee for printing of course.