Use the brief to make the comparison fair.
1. Size and structure
A larger box uses more paperboard and wrap, but the structure also changes the labor and tooling. Magnetic, drawer and multi-part formats usually need more construction than a simple lid-and-base box.
2. Board and insert
The box needs enough strength for the product and route. Inserts add fit and protection, but they also add material, cutting and assembly decisions.
3. Print and finish
Full-color print, foil, embossing, soft-touch and specialty papers each affect setup and unit cost. A restrained finish can often carry more premium value than adding every effect.
4. Quantity and timing
Higher quantities usually spread setup costs over more units. A sample or small pilot order is useful for reducing risk, while the bulk plan should include the actual delivery schedule.
5. Shipping and packing
The quote should consider master carton packing, palletization and destination. A well-designed box that ships efficiently can be better value than a cheaper box that uses more space.