Fix unfair Steam pricing for Poland

Hello! 

It's more an issue with Steam pricing, but Valve to this day refuses to adress it - so it can only be adjusted by the developer/publisher. 

The core of the problem is Multi-Variable Conversion method that Substance 3D Painter uses on Steam; this conversation uses outdated data that punishes some regions.

Poland is the prime example for this issue - in case of Substance, which base price is 199.99$, the Polish people have to pay almost 250$ for the purchase. Higher then Norway while our economies are far from comparable. Pictures below.

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So for no reason we pay 24% extra for software on steam.

https://polishourprices.pl/ describe the problem the best. 

Best case scenario would be to match the base price (199.99$). Thanks for understanding and any help regarding this issue!