Yep, it's very easy and cheap to produce alcohol, the only reason it's expensive now is due to countries adding high excise taxes and the like to alcoholic drinks
I mean I'm 20, when I have parties with friends (all my age/1-2y younger) we just split the costs. 5€ each max. And we all have a good time (or throw up, because some of my friends aren't very aware of their limits lol)