It varies from province to province and depends a lot on what else is in the area for entertainment.
As an eg. my tickets to the Steelers vs Ravens Oct 6th were about $180 US in section 532 each on Stubhub not likely to find anything under $100 US in the stadium seating
A Toronto Argonauts game $108 US box seats on the 50 yard line field level on Stubhub whereas you can probably still get tickets from the ticket office or other seating for much , much less
Now Leafs tickets or Raptors tickets availability and price are a lot, lot higher and more difficult to land.
My Pens tickets were only $70 each on stubhub good seats too
Ask Sask about tickets in his area, but I think they get a better following because there are no other sports teams to compete with in their area. More of a US college feel in the smaller market CFL I would suggest. You will always have die hard fans for every team but the larger areas like Toronto have a lot of band wagon fans that only show up if they are going to the Grey Cup.
I go to more OHL hockey games than pro because the talent is very good in my area and I have quite a few teams that I could go see in less than an hours travel.
I go and watch travel football games (teenagers) because the Cambridge Lions play less than a block from my house and they play 4 down football not 3 down CFL. Costs nothing to see them and they usually put together a decent team that plays others across the province of Ontario.