Yes, they're only selling in select sections.

If you look at the link below from ND, right now they're only selling tickets in Sections 6-13 on the East side and 25-30 on the West side.

Originally, they were only offering sections on one side of the stadium, so I think they've opened up more sections as they've sold some tickets over the past month. They also had some club seats available in the Duncan Student Center on the West side back in November, but those appear to have since sold out.

Click here for link at https://ev12.evenue.net/cgi-bin/ncommerce3/SEGetEventList?gr