The current Package contents form doesn't easily allow for multiple different items with the same HS Code, even though it correctly warns the user that the same HS Code has been used. The issue is that although the HS code may be the same for several items the price and weight may not be.

For example lets say I have two widgets that have the same HS code ( they are the same type of thing ) but Widget 1 costs £2 and weighs 200g and Widget 2 costs £0.02 and weighs 1g, my customer has purchased 20 one and 13 of the other.

To enter the correct weight and price I need to use two lines with the same HS code to correctly record the customs data. However the warning message and I assume customs fee calculation treats two lines as separate entries.

Logically the interface doesn't need to change if the calculation counts unique HS codes rather than line items - so for the EU my example would be €3 not €6.

However having the option to add an item with a Total Price and Total Weight for "things" with the same HS Code and origin is also helpful in instances where combining items would help keep the number of items under the limit of the space on a label.