Due to the fact that Valve has not updated its price list in Poland since 2022, the złoty exchange rate remains very outdated, which results in inflated game prices compared to other European Union countries. Steam users in Poland are paying record high prices for games. Which also affects the sales of your games. Maybe you would be so kind as to take an interest in this issue and write to Valve a request to check the currency conversion rate of your game on Steam. Unfortunately, the prices are quite high compared to earnings and even a drop of 5-10 EUR is already a lot
US price doesn't include taxes, since Poland is part of EU it will include Poland's VAT equivalent, which in UK is 20% on everything
I sympathise. Same old story with Steam unfortunately. The Swiss Franc has been stronger than the Euro for months, but the standard edition is 11 CHF more expensive. Steam informed me that DTG can override the exchange rate if they wanted, but DTG told me it was too much effort. The annoying thing is that on PlayStation they keep the exchange rate up to date and they more or less translate exactly. So PlayStation is consistently cheaper.