psycho if you just sell the half of your luxury box, i recommend to reduce the prices radically.
For somebody, i think you should act the dfferent way build extra seats or make then more expenses(or both) - i would say in the optimum case you have prices where you sell 99,9% becuase it is nealy impossible to find then and hard to know how many visitors can come in when you are to cheap try to fill your arena about 95% after an win(the two cheap categories are highly affected from the last game).