Prom Ticket Costs

I am curious what other schools are charging for prom tickets this year and what they include in that cost. My daughter’s school ticket cost seems exorbitant to me at $140 per person and an additional $10 for an after prom party. With dress cost and tux rentals , hair make- up, etc- for 2 kids to go you’re looking at $500 and upwards. Is this the going rate at all high schools?