Where to buy the Blum full extension soft close slides in Canada?
Not sure where in canada you are but you could check out Richelieu hardware website, I don't think it is that hard to sign up and buy from them.
Or the Blum website should have a link to someone in your area.
My kitchen guy supplied ours. Not sure if true for all full extension soft close drawers but ours are rounded inside the drawer instead of squared. Make sure you see what you are ordering, I do not love the rounded edges as it limits the type and available drawer organizers. I'm thinking about ordering the Blum drawer organizers just so they fit in the drawers tightly but I am quite sure they will not be inexpensive.
Hope this helps.