KINZ-If you don't mind waiting 5-10 minutes before kickoff, you will be able to find seats for $10-20.
Don't let anyone tell you different either, I have snared these for many games, including the last Packer game here.
Keep in mind, these are not the best of the best seats, but i dont care, as I just watch the game from either end zone party decks.........personally, i prefer the south end and not the north end that has the pirate ship.
Now, most uppers(which I feel are great seats because one can see the whole field), will go for 10-20 bucks also.
Hope this helps in someway
FH