Procurement decisions and comparisons
Supplier Cost Breakdown vs Buyer Should-Cost: Compare the Assumptions
A supplier cost breakdown describes the cost categories the supplier chooses to disclose; a buyer should-cost model is an estimate built from the buyer's assumptions. Compare scope and evidence before comparing totals. Neither document automatically establishes the supplier's complete economics or a binding price for the proposed garment order.
For sourcing managers investigating differences between garment quotes and budgets.
State the question each model answers
Use the supplier breakdown to understand the quoted scope and the disclosed drivers. Use the buyer estimate to examine a budget or test assumptions. Do not call the estimate an observed factory cost. Equally, do not assume a partial supplier worksheet reveals every overhead, risk or commercial consideration behind the final quotation.
Align the garment configuration
Match fabric, decoration, trims, size allocation and packaging before discussing a difference in totals. Identify inclusions that exist in only one model. A simple base-garment estimate cannot be compared directly with a quote covering sampling, special packout or other explicitly included work. Record excluded items so the comparison remains useful instead of becoming a negotiation over unlike scopes.
Label observed inputs and assumptions
For each category, state whether its value comes from a current quotation, a supplier explanation or a buyer assumption. Keep unknowns open. Do not populate missing labor or consumption values with invented factory data. If a model uses provisional estimates, show that status alongside the value rather than hiding it in a footnote disconnected from the comparison.
Ask about the largest unexplained differences
Prioritize categories where the scope is aligned but the assumptions differ. Ask the supplier to explain the relevant driver or propose an alternative construction. Avoid demanding undisclosed commercial information as if the worksheet itself created that obligation. The useful outcome is a clearer decision about the proposed garment, not an unsupported assertion that one side's internal number must be wrong.
Keep confidentiality and sharing boundaries clear
Ask what information may be retained, circulated or used for other sourcing decisions. Separate the buyer's own estimate from supplier-provided confidential material. Record any agreed restrictions without inventing legal terms. A transparent costing discussion should not accidentally turn a project worksheet into a public claim about a named factory's wages, margins or production efficiency.
Return the decision to a confirmed quotation
Document the agreed scope changes and request an updated quote where needed. Preserve the estimate as a planning tool, not as a substituted price commitment. Ask MyOwnWear which cost categories can be explained for the project and which remain commercially undisclosed. This inquiry is about cost transparency and model quality, not quote validity or a promised fixed-price period.
Decision and evidence checklist
| Decision | Include in the brief | Review evidence |
|---|---|---|
| Scope | Same garment and included work | Aligned configuration list |
| Evidence | Quoted, disclosed or assumed input | Source/status column |
| Outcome | Agreed changes and current quote | Reconciled decision record |
What this brief does and does not establish
Costing terms are used as scoped working definitions. No wage, margin, consumption rate or MyOwnWear open-book policy is claimed.
Share the garment scope and clearly labeled estimate assumptions with MyOwnWear; ask which cost drivers can be clarified in a project quotation. Open the MyOwnWear RFQ form.
Buyer questions
Is should-cost an observed factory cost?
No. It is a buyer estimate unless each input is independently evidenced.
Must a supplier reveal every cost category?
The disclosure scope must be agreed; do not assume complete access.
Can the model replace the quotation?
No. Confirm the actual commercial offer separately.