The Cost of Ready
Landed economics, working capital, incremental costs and meaningful performance measures.
Part 15 of 18 · Before the Shelf
A lower freight bill can conceal a more expensive system
eComm Inc reduces its transport bill by consolidating weekly deliveries. Stock now waits longer at origin and arrives in larger bursts. The receiving queue grows, more books miss their selling window and Maya carries additional finished inventory.
The carrier invoice is smaller. The rest of the system has acquired more waiting. To decide whether the change was worthwhile, put the saving beside the inventory, receiving and service consequences over the same period. This is a managerial comparison; accounting recognition remains a separate question.
Keep four kinds of money separate
The carrier incurs an operating cost. Maya or eComm Inc pays a negotiated price. The accounting system classifies recognized amounts under its policies. A management model allocates costs to products or routes. Those four numbers need not be identical.
An extra pallet on a truck already committed for other work may have a small incremental cost. The pallet's allocated share of the full truck cost can be much larger. If it requires a second truck, the incremental cost can jump abruptly. The right number depends on the decision horizon and what can actually be changed.
A denominator can change the conclusion
Assume inbound freight and handling cost $2,000 for a consignment declared as 1,000 books. The declared-unit rate is $2. If only 980 books are usable at the measurement checkpoint, the cost per currently usable book is about $2.04.
Both ratios can be calculated honestly, but they answer different questions. State whether held stock is excluded temporarily, whether later recoveries revise the measure and whether merchandise cost is included. Do not mix cartons, books, order lines and loads because each produces an attractive number.
For our full cross-border teaching example, $22,000 of selected costs divided by 980 usable books gives about $22.45. That is a scenario cost per usable unit, not a market benchmark or proof that every listed cost belongs in accounting inventory.
Time ties up resources
Suppose 400 extra books, valued at an assumed $20 each, are needed because usable lead time grew by four days at 100 books per day. That is $8,000 of additional inventory value in the scenario. It is not automatically an $8,000 expense. Funding, storage, loss and obsolescence have separate economic effects.
An illustrative annual carrying charge at 20% would be $1,600 on a continuously held $8,000 balance. The rate is an assumption, not a universal cost of capital. For a short holding period, use a consistent time basis and avoid charging a full annual amount.
A small scorecard with explicit contracts
| Measure | Define it before using it | Failure it can hide |
|---|---|---|
| Supplier readiness | Loads ready within the agreed original window / eligible loads | A carrier's pickup delay blamed on the supplier |
| Arrival reliability | Arrivals within the original agreed window / eligible arrivals | Revised deadlines erasing misses |
| Dock-to-stock time | Declared receiving boundary to usable release | Counting only easy, completed loads |
| In-full performance | Complete quantities at a specified grain and cutoff | Mixing lines, orders and units |
| Damage rate | Affected units / inspected or received population, explicitly stated | Uninspected goods treated as defect-free |
| Cost per usable unit | Relevant cost / eligible good units for the same cohort | Mismatched periods or unresolved holds |
| Exception age | Time unresolved by reason and owner | Averages hiding a few very old cases |
Track distributions and cohorts, not only averages. Report still-open receipts; otherwise difficult loads disappear from completed-load lead-time statistics. A combined “on time, in full” metric needs a defined date, quantity grain and denominator. It is not one universal industry formula.
Compare the business before and after the change
For weekly consolidation, hold the comparison steady: the same product cohort, the same usable-stock endpoint and an explicit period. Add the changed transport and handling costs, examine the extra inventory time, and keep the service consequences visible. Distinguish one-time transition costs from the recurring operating pattern.
Maya may carry more finished books before collection while eComm Inc carries fewer on its own premises. That shift can change each party's cash needs without reducing inventory in the combined chain. A price comparison should expose who finances the wait and what service is being purchased.
Finally, check what else changed. Demand mix, fuel, wages and volume may explain some of the apparent improvement. A lower cost per load is a useful observation. A conclusion about better inbound economics needs the number of usable units, the time and capital required, and the promises those units can support.
Public sources and evidence boundary
- MIT OpenCourseWare: Lean Thinking Part II (2012)
- FHWA: Supply Chain Modeling Needs and Concepts, modes and transfer
Public material checked on 18 October 2026. Sources support the named definitions or frameworks; the scenarios, diagrams, calculations and proposed decisions are original teaching examples. No private company systems or performance data are described.