Canadian cell phone plans are incredibly high; in fact, we have some of the highest in the world. However, Mobilicity offers some of the most affordable cell phone plans (that do not require a contract) in Canada. You're not tied down to anything.
If you need affordable cell phone access while you're here (if you have an unlocked phone), Mobilicity probably provides some of the best service for the price. Be aware, however, that coverage is limited outside of the city. However, you will likely be able to avoid some roaming fees.
Any location will do - I just selected this one from the list.