Asset List Inventory Reports learn to count.

Asset List w/ Images and the sister report Asset List w/o Images now sum their Asset Types by unit count.

If you select a single Asset Type you get a total for that Asset Type alone. Select multiple Asset Types and you will get a grand total for all units for the selected Asset Types.

Why you ask?
Suppose you wanted to know how many graphics in total a customer owns.
Or
You bill storage by case count not cubic footage.

Note: I didn't think of it either till a very nice warehouse manger told me his boss asked him how many crates a customer owned and he couldn't answer the question.