I remember the stadium not being full every game, but certainly there were several sell outs, perhaps during Max Hall's years of 10 wins where the stadium was sold out and attendance was up around 63-64000 I think. Maybe only the Utah home game sold out completely, I'm not sure.
What has changed? Did the ticket prices go up a lot? I thought those nosebleed endzone tickets were around $15-20 or so, so $25 is a bit more, but not wildly so.
I guess the seemingly lackluster home schedule probably didn't help get a lot of season tickets sold...let alone single tickets.
I agree on the market principles though. Obviously the price is too high for demand. :\