NewEgg Canada has no TVs smaller than 55 inches. A TV that size I would have to watch from the driveway. Also, the prices look consistent with Best Buy, which has a real-world store where I could see the goods and measure the feet to ensure the thing will fit where I want to put it.
I looked at Amazon Canada, and got much the same result. Small TVs are available there, but none at an image resolution standard better than 1080p.
As for Costco, I’m not a member and I don’t plan to join.