This isn't unique to the U it is across the board with Bowl games I believe. The schools are typically allotted tickets in some of the most high priced sections of the stadium so the fans wanting to buy through the school have to shell out big bucks to get the tickets. At the same time, outside of the top games, most of these games are not well attended so tickets are dirt cheap on the secondary markets.
It will be interesting to see where our final ticket sales numbers come in for the Quick Lane Bowl. Have to imagine they are going to be pretty low which will shock no one given the location of the game and the relative excitement around the program coming off a 5-7 season. It is a no win situation for the U being stuck with really high priced tickets to a game most don't want to attend.