This is a strange one.
I've tried everything all season and not once got more than 19100, with 21,000 capacity
Few seem to be able to get 100% now a days.
Price optimum for me at L5 seem to be $9 for the league and $10 for the cups, the 19100 was a cup game.
My lowest gate of the season both came in the games where $8 was charged, league two days ago 14,600 and the cup game where I was knocked out 16,400.