Hi Ken,
I'm not sure where it is you live, but if you live anywhere near Toronto I found a great shop in Kensington Market that sells a wide array of dried chili's and powders.
If you are looking for fresh, have a look around at larger "farmer's markets" as I have seen more then a few stands that are carrying assorted chili's. St. Jacob's market has vendor who sells everything from Bell Peppers to Pablano to Scotch bonnet and Habanero. I'm sure St Lawerence market would have lots too.
If you are in a region without an "ethnic" population you might just have to find out if some of the american spice companies will ship to canada.