How's your French?
Contacting Daniel Matton would be a good idea. Ambar Sun is not on his website, but that doesn't mean he doesn't still have some available.
I also found it at this other seller, also from Quebec, with a website in French. Where other dayliles have a price, Ambar Sun has "ND", which I'm guessing is like not available. But if your French is up to it, it couldn't hurt to check with the seller on its availability. My French is awful, but I saw a note on the home page that says they can sell to the US as long as the states don't have restrictions.