This is BS. In reality starter is going to earn 1500-2000 top. For example: DreamLab Onet.pl (the biggest polish portal) pays their starters about 2000 PLN.
Legal minimum wage = 1200zl/month
Average wage in Poland = 3300zl/month
And those are the national figures. The big cities pay much higher. In Warsaw a barman in a decent place is going to be on 2400zl/month. You think a web designer makes 20% less?