Guadalajara is twice the size of Seattle. A large store, even for groceries, is rare. Instead there are many many small shops. It takes a lot of wandering to stumble into what you're looking for. While the roads are up to date in Google maps, the shops are not.
@donpdonp here in Philadelphia we have a lot of tiny stores too (Though also your usual big US brands, Safeway, Wal-Mart, etc.). In the dense part of South Philly I feel like it's all about corner marts. There's one on every block just about. Some are super small, like this one down the street from me with only one isle and only one person fits in the isle at a time! But I kind of like it. Once you live here for a while you know where to go for stuff.
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