A reader asked about "bags of milk" that I wrote about last week. In Honduras, milk is expensive, and regular folk don't have money to buy milk. Children typically drink coffee or Coca Cola as soon as they are weaned. Yes, I know. Scary. However, if you can afford it, milk is available in a number of containers. There is the carton, pictured above.
Then, there is the shelf stable milk for those who lack access to refrigerators.
There are bags like this, which is the cheapest way to buy milk. Incidentally mayonnaise, ketchup, salad dressing and even refried beans are sold in bags, too. Powdered milk is available but since the water is unsafe to drink, that's not a cheap option, since one must buy water, too.
Or you can go to the source. The choices are only limited by economics, dear readers.