Despite them being a EU member state, they don’t use Euro as their official currency. Since they have their own currency being the Zloty which is considered stable, but even if you have Euros or US Dollars for converting to Zloty: does purchasing power hold up since both Euro & US Dollar possesses a higher rate? I figure that Warsaw will be expensive due to it being the capital, so that is expected.
Südbaden is catering to the Swiss now, the prices are almost as bad as the ones in Switzerland. Meanwhile, the Germans who live there have to pay Swiss prices on German wages.