Law / Will they really stick up the price of booze this summer in Poland? [5]

So it's been all over the place that pub owners are going to start throwing up the price of booze this summer, but they're blaming suppliers....a load of BS if you ask me! Plus they're jacking up the cost of vodka for the Russians and beer for the Czechs...how much of an increase do you reckon they'll get away with?