I didn't think so. I had never seen them, but I have limited total area experience.
You do have Wal-Marts everywhere. It's nuts. And they're all gigantic. The largest one I've ever seen is in Mexico City.
And if you know anybody that works at Costco, can you convince them to build one in Northern Sonora. I'll work on Southern Arizona. I have no problem with people coming up to buy stuff at costco, they get their products, we get money and blackmarket bologna, it's a good deal. But the traffic near our Costcos is insane every weekend. It's so bad I never go on the weekend, only Monday mornings.