That's not the point, or sort of is but you're agreeing - you can't compare like for like 'I bought shampoo and a lasagne' because in almost any part of almost any country there's a huge range of possible costs for that.

I agree. A consequence of rising food prices may result in people opting for lower quality alternatives although, in the example above, this is just someone who always buys the cheapest regardless. There are people like this.