bad example BMW will not sell you a brand new car if you are a Canadian resident
this is a good read if you plan on importing a car.
CAD MSRP and US MSRP are like comparing apples to oranges. You really dont know what kind of savings you will have until you actually bargain with the US dealers.
$20k on a Subaru Outback is a huge savings IMHO for a couple hours of work.