How to filter Audiogon results to Canada only.

You can also try Canuck Audiomart.

Canuck audio mart is an excellent website with a bunch of fun folks on the forums.
(If a bit regional in their hairy shirted opinions.  :p) (I'll probably get a swat from someone for that) (all in good fun)

I have been checking CAM several times a day for a year or more. Nothing has really come up that interests me except for two Classe mono amps and a Classe pre. I am hopeful that some Krell or Pass Labs stuff will be listed but no luck yet.

Have you used the saved searches feature on CAM?

If you are close to the border why not have it delivered to a town nearby (FedEx or UPS store) and pick it up yourself. You will be opening yourself up to a lot more potential sellers. I have shipped and bought a few amps from Canada and have not had any issue other than one time delay at customs.