I am thinking from financial perspective if I need to buy one.
So it depends on the price you get for your old one and the amount your time is worth. Check Allegro.pl to see the prices of electrical goods here.
But I am asking this assuming I rent an average place.
If the ones where you want to rent aren't up to your requirements, you can use that to negotiate with the landlord (e.g. five thousand off the rent if you spend that on electrical goods which stay in the flat when you leave).