they're waiting for law regulations about cryptocurrencies

These regulations are already in place. http://pl.wikipedia.org/wiki/Bitcoin#Polska: Bitcoin trading is allowed, but polish Ministry of Treasury of denies Bitcoin's status as a financial instrument (as a monetary unit, or - relative to Allegro's case - as an electronic payment instrument). http://www.senat.gov.pl/gfx/senat/userfiles/_public/k8/dokumenty/stenogram/oswiadczenia/klima/3001oa.pdf