Well unless we've got 10,000 season ticket holders then that's not the case is it?
Every season there are a few games where PATG punters get a discount, it doesn't bother me in the slightest and like Welldaft says I think most are the same.
Anything would be better than a 2/3 empty ground where you can hear the players shouting and the fans generally don't give a toss.