Outside Costs
Start by tabulating costs that you pay other people, e.g. for materials, supplies, manufacturing, or printing. Split them up into overhead and per-unit costs.
Do not include compensation for your own labour and time, transaction costs, or shipping costs yet - these will come later.
Overhead Costs
If the project goes through, you have to pay this fixed amount to suppliers, regardless of quantity ordered.
Per-Unit Costs
If the project goes through, you have to pay your suppliers this amount for every additional unit ordered.
SGD$
/ unit
What if my supplier gave me a pricing table?