I recently did a price comparison on 18 items in Tesco and Aldi, all store cupboard ingredients, no meat or fresh fruit or veg.
Aldi was massively cheaper on caster sugar, icing sugar, soft brown sugar.
It was also cheaper on rice, fusilli pasta, eggs, granulated sugar, tomato puree, some chocolate, plain flour and self raising flour.
However, it was the same price, or more expensive than Tesco on spaghetti, lasagne, butter, tinned tomatoes, passata, and basic chocolate.
And it did not sell bread flour or dried yeast at all.
These were just store cupboard ingredients I would always want to have in my cupboard. They might be a bit random to some of you, but I couldn't check everything.
My research left me unsure if Aldi would be cheaper enough to warrant the inconvenience of not being able to get everything there. Also, while I am not much of a brand shopper, some in my family are particular e.g. cereal. They only sell their own cereal and I don't know if that would be acceptable to some in my family.
I'm going to have to give it a go and see how it works, aren't I?