Wow! I had to pull my receipt, but I paid $485 (+ tax) for my 6000 non-DSP last December. That's a really nice deal! I'm almost considering buying one just in case... but I can't see adding any more subs anytime soon. If anybody in Canada is sitting on the fence, just order it now.
AVShop.ca also carries them. They have a small storefront in Markham too.
That was where I got mine, I don't think they had a price match... or maybe at the time they were the best advertised price for Canada. In any case, it was fresh stock with a recent build date, and they were easy to deal with.