Cost Per Unit (CPU)

Cost per unit (CPU) is the total cost incurred to produce or purchase a single unit of a product or service. In procurement, it is the primary metric for comparing supplier quotes, negotiating prices, and tracking cost trends over time.

How to Calculate Cost Per Unit

The basic formula: Cost Per Unit = Total Cost / Number of Units

In procurement, 'total cost' may include more than just the purchase price:

• Unit price: the base price quoted by the supplier
• Shipping and freight: delivery costs divided across units
• Taxes and duties: import duties, GST/VAT per unit
• Handling and storage: warehouse costs per unit
• Quality inspection: testing and verification costs

The sum of all these components gives you the 'landed cost per unit' - the true cost of getting one unit to your facility.

CPU in Supplier Quote Comparison

When comparing supplier quotes, cost per unit is the most direct comparison metric. But the lowest unit price doesn't always mean the lowest total cost. Consider:

• Supplier A quotes $10/unit but requires minimum order of 1,000 units
• Supplier B quotes $12/unit with no minimum order quantity
• If you only need 200 units, Supplier B may be cheaper overall ($2,400 vs. $10,000)

RFQ software like AuraVMS automatically ranks supplier quotes by price (L1 = lowest, L2 = second lowest), making unit price comparison immediate. But the best procurement decision also weighs lead time, quality, reliability, and total cost of ownership.

Tracking CPU Over Time

Monitoring cost per unit across procurement cycles reveals pricing trends: are material costs increasing? Is a supplier gradually raising prices? Are you getting better rates as your volume grows? This data drives negotiation leverage and sourcing strategy.

CPU vs. Total Cost of Ownership (TCO)

Cost per unit is a snapshot of the purchase price. Total cost of ownership includes the full lifecycle cost: purchase price + maintenance + operating costs + disposal. For commodities and raw materials, CPU is usually sufficient. For equipment, services, and long-lived assets, TCO is the better decision metric.