price depends on what game and how they do during the season. michigan game will always be more than say, YSU. the price will be more if we are 11-0 than if we are 0-11...
my friend got a ticket for one of the mid season games last year... i forget which one. i think he paid 50 bucks from one of the "i need tickets" guys.
there are always ppl down there selling tickets. keep an eye on ebay or craigslist too