As I mentioned in my post, the price difference rarely reflects the actual exchange rate. Canadians are routinely overcharged for basic goods and services by vendors in Canada - one of the reasons people flock to the US to buy cars when the currencies are close. Lexus/Toyota was sued for charging 20-30% more for the same car in Canada (often made in the Canada) than the US when the exchange rates were almost at par - then ordering dealers to refuse service to US-sourced cars brought to Canadian dealers for service.

It's basically a nationwide scam that's been going on for years - hence the $9 sandwich that should sell for $6 down here - and often does (which is what I paid for a larger version of the same thing on VX).

As to the IAH-UK trip poster - if you don't mind the connection at YYZ (which requires clearing Canadian customs/immigration and security again, so make sure you leave enough time), the AC Y experience is going to blow the socks off CO Y - and this is coming from someone who is often accused of injecting CooLAid right into his veins.