Yeah, Canada is cheaper. I don't pay for mine ('cause I'm on government assistance), but sometimes they leave the slip in with the price before coverage, and I think it was only $50 here, or something like that. It would vary pharmacy to pharmacy, although.
I wouldn't trust internet ones, 'cause I've heard that some of the so-called "canadian" ones on the internet are actually from different countries. I also heard that they are trying to stop people from ordering canadian prescriptions online to send to the US.