Sure you could get them in the box office.
Hi I live in Toronto 5 minutes from the dome.
Anybody got a couple of tickets for the Seattle game in Toronto they'd like to sell at a good price?
There are thousands of seats available just go online and take your pick
Whether you think you can or can't either way you are right--Henry Ford
Check out ScoreBig. They've got seats still available. I got 2 tickets (1-star seats) for $27 each. While it's not a site for every type of person/group going to an event (many aren't the biggest fan of the fact that you can't choose your exact seat location, just a general area), I say it's the Priceline of live-events - you get to put in what you want to pay, and if accepted, you'll guaranteed to save between 10-60% off the retail price, every time.
good luck should be a great time, let us know how it went !
Don't get hit