bauldbairn said:
Probably because of the extra processing cost of making the milk healthier - skimming. Maybe the cream by-product offsets the cost?
No, no. Supermarket pricing is based on hard economic theory and is very, very precise. Semi skimmed milk is more expensive because it is bought by a different demographic who are willing to pay slightly more for what they perceive to be a healthier product.
The same trick is used to sell Fairtrade products. More money does go to the producer, but usually only 1/4 of the extra.
And here is another example of supermarket precision. Why are their Basics or Value ranges in garish yellow and black packaging? It's not to make them easier to find for people who
have to buy at that price, because they will seek them out anyway - it's to discourage the shoppers with more money from trading down to less profitable items.