you described 2 things:
1. you wanted a Polish language version, and
2. you want regional pricing, because you can't/don't want to pay the same price as everyone else, and the regional price on GOG isn't good enough for you.
While I understand that Polish salaries may not be high enough to warrant paying full price for such games, that in no way justifies piracy. That's just as bad an excuse as "hey, I want this Ferrari, but I can't afford it off my salary. If you don't sell me the Ferrari for 5000 EUR or less, then I will just steal it!"
If you don't have the money to buy something, then just skip it entirely.
