1) The price is not a set price per person.
2) The $75 fee is a set MINIMUM per price person fee - if not spent, you are charged the $75 fee.
3) Obviously they hope you will spend more.
4) And, yes, they are trying to eliminate it, since non-Priority Seats spend more.
5) Too many people get the priority seats and watch very closely the amount they spend.
6) And, those who just grab a seat tend to drink more and spend more as they get "lubed up".