A festival ticket isn't really paying for one performance, you're paying for an entire temporary city.
Stages, artists, security, toilets, electricity, staff, transport, production, insurance and cleaning. Everything else required to keep thousands of people in one place for several days.
Then there are artist fees, which can vary enormously, The interesting part is that the ticket price doesn't necessarily mean the organizer is making huge profits.
Large events also carry huge risks Weather can change everything. An artist can cancel, sales can be lower than expected. Costs can suddenly increase.
So the price of a festival ticket isn't only about the music.
It's about building an entire environment for thousands of people — and making it work at the same time.