Walmart sells the shit ones that wouldn't last in the US. Most places I go don't. I wouldn't buy those. Last time I went on vacation and didnt think to bring any I just didn't use a bag and carried armfuls of groceries in instead of buying that flimsy crap.
I don't understand people who live in areas that don't allow plastic bags anymore who wouldn't think to buy some decent ones. They just go back in my car after I unload groceries and they last for years. It's such a weird thing to not be able to handle.