Shopping in Barcelona

So you are in Barcelona for a while. You want to know a lot of things: places to visit, where to buy things, etc.
Let's talk about food shops now:
The main food shop chains are: DIA, Spar, LIDL, Mercadona, Bonpreu, Bonarea, Consum, Condis, Opencor, Carrefour Express
The biggest chain is DIA supermarket, owned by Carrefour. There are a lot of DIA shops, almost on every street there is one. The prices are very good, and they have their own products (with DIA logo), sometimes at almost half the price. For example in a DIA shop a pizza is 1.40 € (DIA branded), and 2.50 € / kg for the pizza that is not branded DIA. So their own logo on a product means much cheaper product, and the quality is the same or almost the same with non DIA products.
Opencor is a food shop, owned by El Corte Inglés. There are 18 Opencor shops in Barcelona, and they are open 18 hours daily, from 8 AM in the morning to 2 AM in the night, every day of the year. The prices are a bit higher than the other shops, but opens earlyer and closes later than the regular food shops.
Here is a map of the Opencor Shops:

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Here you can see where you can find a Bazar in Barcelona:

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