Hi, I was just at the Bay and they're having a Le Creuset sale this weekend @ 20% off. (a bit last minute) But, if you've been looking for one, this is a pretty good deal for Toronto at least. I just got the 7 Qrt. for $279.99 (+ tax). It's cheaper than buying it online from the states. There's also a huge cookware sale there this weekend.
Another sale I found online is at kitchenniche.ca. They're currently having a Le Creuset sale. 7Qrt. for $299 (+tax, shipping included in Canada). It's a bit more expensive than the Bay, but, not bad. (I've never bought from them, but so far, their customer service had been really good when dealing with my inquiries.)