I haven't ever come across a cheque being used in Poland! From what I've seen,
I should clarify that the cheques was received from a company in ireland and not poland. I have never seen a cheque being used to transact in poland, either on a small or large scale. A lot of large scale transactions are by money transfer between bank accounts. This is actually one area that poland are miles ahead on i.e. no cheques in the payments system unlike ireland and UK which still have a large (though decreasing) reliance on the cheque book.