The duty free in the flight is expensive compared to Air Arabia. I have traveled to Baku recently with my family using wizz airline and I was charged 35 Euro per passenger in azerbaijan ( baku ) on my way back to Abu Dhabi for not checking In online which I believe it should have been the air lines job not ours. And also they were giving me problems for my hand cary baggage for no reason, their reason was that your hand cary is not back pack. Bad experience using wizz air never recommend it.