I saw those too. That's pretty common pricing in Toronto. It's doubtful people actually get that for a bike, since I've seen several Bianchis around $375 get relisted. People price CL bikes based on other unreasonable listing prices, not on final sales.
If you hound CL (i.e. several times a day), you'll eventually see good bikes at reasonable prices. But since everybody and their two-legged dog wants decent wheels here, the good ones get snapped up quick.