Seems to be reasonable and a logical way of looking at it. But, that doesn't mean that is what is happening. Just seems a bit odd to issue a PR and word it in the form of containers instead of quantity and/or dollar amount. For example, when I grocery shop, when I come home, do I say I bought a cart full? That could mean anything. Maybe I bought 20 paper towel rolls. Now, when I come home and say I just bought $200 worth of groceries, that really puts things into prespective. So, the question I raise here is this.... why word the PR to say container? Well... there is only one logical answer and that is to keep the quantity an unknown to the readers and wow people with the thoughts of how many are in a container.