Ty for info
It depends where are you from.
I have spoken with different ppl from different countries (including USA, Russia, Finland, Belgium, Japan and so on), mostly they are happy with prices, especially beer, as 1 beer in many EU countries are ~5 euros, at the fest site you get 10° for 1 euro and 12° for 1,6 euro (at least this was last year).
I've been also told that a ticket to a festival in Japan is expensive as hell + their law allows only 1 day long fests...