Hi Berni,
Thank you so much for you patience on this, it took A LOT of digging to figure this out. It turns out this has to do with safety laws about shipping batteries. The gist is that we can't ship a battery through an air route and there are some customs issues that get in the way of ground routes for shipping from the US to Canada. [br]
My best answer is to keep an eye on our Canadian store an hopefully they'll be stocked in the future.
Right now, it looks like both the [link|https://canada.ifixit.com/products/macbook-pro-13-retina-early-2015-battery?_pos=1&_sid=38ced582c&_ss=r|13" MacBook Pro|new_window=true] and the [link|https://canada.ifixit.com/products/macbook-pro-15-retina-mid-2015-battery?_pos=2&_sid=38ced582c&_ss=r|15" MacBook Pro|new_window=true] (both 2015) have fixit kits available (as I write this.)
I hope this helps!