Purchase Price Is Not Your Actual Product Cost
The price on the supplier invoice tells you what the raw material cost to buy. It does not tell you what the usable product cost to produce.
Fresh produce changes as it moves through an operation. Quality decisions, trimming, peeling, preparation requirements, process losses and usable yield can all change the economics after the purchase has been made.
Purchase price is only the starting point
If carrots are purchased at R10 per kilogram, R10/kg is an important fact. But if only part of each purchased kilogram becomes usable prepared product, the cost carried by that usable product is higher.
What was paid for the raw material
What the usable output effectively carries
The arithmetic is simple. The consequence is not.
Suppose the purchase price remains R10/kg.
No preparation loss.
R10.00 ÷ 0.80
R10.00 ÷ 0.70
The supplier price did not change. The effective raw-material cost did.
A cheaper purchase can become the more expensive input
Purchase price alone can therefore give management an incomplete comparison between suppliers, grades or deliveries.
Supplier A
R10.00/kg purchase price
R14.29/kg usable
Supplier B
R11.00/kg purchase price
R12.94/kg usable
The lesson
The lower invoice price does not automatically mean the lower raw-material cost per usable kilogram.
The comparison is illustrative rather than a claim that one supplier is inherently better. Yield can vary with product condition, grade, season, preparation specification and the way material is processed.
Expected cost and actual cost answer different questions
An expected yield provides a costing baseline before production. It allows the business to estimate what a usable kilogram should cost for a defined raw material and preparation.
Known before processing
The costing baseline
Actual production evidence answers the next question: what quantity went into the defined process, what usable output came out, and what happened between those boundaries?
Understanding Yield in Fresh Produce Processing explains why those measurement boundaries matter and why expected yield and actual yield should not be treated as the same thing.
The cost difference needs an explanation
If usable cost changes, management needs more than the final number. It needs the operational evidence that explains the change.
Quality
Was more material rejected or unusable because of condition?
Preparation
Did the required specification create more trim or processing loss?
Operation
Did handling, process performance or another event change usable output?
A variance without evidence tells management that something changed. Evidence helps establish where it changed and why.
Explore the Yield series
Follow the complete journey from understanding yield to turning operational variance into management information.
But “What did the usable product actually cost?”
That is where purchase price becomes operational intelligence.
Explore Profitability Intelligence