Digger driver and machine cost in Poland

I've getting quotes from JCB / digger drivers ( man and machine. Costs per day for driver with machine are very varied from 1500zt per day to 4000zt per day !! Can anyone tell me costs from different areas of Poland ? And what is a fair price ?

Lower Silesia .

Full size 150zl hour.

Mini digger 120 zl hour.

Thanks ! We are in Augustow north east