Whenever I have been to Aldi and Lidl abroad, they sell every drinks cans and bottles separately - alcohol and soft drinks. So you can buy 3 bottles of beer which come in cases of 12-18, as well as the full case. I think there was about 5% saving to buying the full case.
This proved valuable when I wanted to buy a couple cans of beer and soft drinks to enjoy on the hotel room balcony/on the beach.
Why isn't this model used here?