You’ll have to buy the collection like I did (I’m also in Canada). Luckily, the Saga Bluray collection went on a massive sale recently. They used to be $110 and now they’re $75 (or they were when I bought mine). It didn’t seem like a one-time sale, though. It seemed like a permanent price drop. Maybe they’re trying to get rid of them…ebay is a good spot too.
if you join the disney movie club, the trilogy is only 26 dollars. Or 11.97 each for steelbooks of each movie…