Where to find hoods for Shimano ST-R875 Levers?

I've been searching on the internet high and low for replacement hoods. Unfortunately, these are discontinued by Shimano and everyone who is listing them shows "Out of Stock"

Ebay doesn't seem to be returning any valid listings either.

Anyone have a source? I'd prefer Canada, but at this point I don't think I have the option to choose. (I also can give a European address if it's only available there)