It lasts as about the same. You can get the UHT most places i've been to, but it is not particular popular. The problem is more about purchasable quantity. 1

It lasts as about the same. You can get the UHT most places i've been to, but it is not particular popular. The problem is more about purchasable quantity. 1/2 gallon (~2 liters) is the smallest "normal" size for Milk, you can definitely buy pints, and liters as well. The cost-per-unit definitely goes up below 1/2 gallon.