I often buy my daily groceries at Intermarché. They have products and brands that are sometimes cheaper than other chains (Auchan, Carrefour etc), and their own brands (Repère etc).
The only problem is that there are sometimes products missing from orders, because they prepare orders according to store stocks, unlike other chains which have their own dedicated drive-thru stock. But of course, they refund and only take products that are actually available.
In any case, I recommend them.
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