I'm pretty sure here where cinemas have shown "big" football matches and concerts tickets have been similar price to normal film prices, which would almost seem reasonable. Surely at $30 ppl will flock to a sports bar showing it, but maybe they''ll have to pay too much to show it so will charge admission?
I remember many years ago going on a date, not realising teh pub I went to on first date with a girl was showing Frank Bruno fight, I was sneakily watching it, funnily enough she caught me out, 'cos she was doing same thing