That's funny, I made a domain-specific version of this for canadian coffee deals.
Also like the project!
Of course I put this together because Black Friday is when I load up on (relatively) cheap coffee and chuck it in the freezer, so this time of year I always branch out and try new places and new offerings from familiar places. I built this list mostly from a reddit compilation I found, and I've been slowly updating the source url list as I learn of new canadian roasters that happen to be Shopify customers.