Check local greenhouses. I found some here in Saskatoon at a locally owned farm and garden center. Also any place that might deal in orchids.
If you're in Calgary try Greengate Garden Centres.
Shows they have Chilean sphagnum (Willgro brand)
Fulfill your gardening soil needs
greengate.ca
All the way at the bottom.
It's the same stuff I've bought. It's a bit dirty, so pick out the sticks and the leaves and the roots... There was some random seeds in it too that sprouted. I plucked them out. Now I sterilize it before I use it by putting it in my instant pot (pot in pot method)