A LEDGER TAB
Pack & basket

Cup-only cartons are not cup-and-lid kits
Separate cup counts, lid counts and presentation accessories.

Case, pack and each are different purchase choices
Use the selected price denominator rather than a nearby equivalent figure.

Why 1000 cups can require two 800 lid cases
Different case counts can create a real surplus in a documented pairing.

A cup-and-lid basket needs two lines and an honest subtotal
Known merchandise cost is separate from unknown delivered cost.