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Methodology & evidence

How Packseen turns packaging evidence into verified savings

We would rather show you a smaller number we can defend than a larger one we cannot.

Every Packseen saving is backed by recorded evidence. Where the evidence is incomplete, Packseen reduces the strength of the finding or refuses to calculate a saving. Key comparison inputs and findings retain recorded evidence so the basis of a result can be inspected.

Built-in caps and refusal rules prevent unsupported or inflated savings from being reported.

The Packseen verification flow

From documents to classification

  1. Step 01

    Documents in

    Invoices, quotations, specifications and operational records you supply.

  2. Step 02

    Structured & normalised

    Commercial and specification details extracted, with nothing assumed.

  3. Step 03

    Compared against benchmark

    Like-for-like comparison only where the pricing basis can be reliably normalised.

  4. Step 04

    Classified

    Confirmed match, partial match, or no reliable finding.

1. What we read from your documents (and what we leave blank)

  • Packseen extracts the commercial and specification details from invoices, quotations, specifications and operational records you supply.
  • Anything a document does not state is left blank. We never fill it in by assumption.
  • Pricing basis (per thousand units, per roll, per pallet, per case) is recorded exactly as printed.
  • Missing dimensions, freight costs or charges stay missing. We do not invent commercial terms, sizes or delivery costs to make a comparison work.

2. How we make two prices comparable

We only compare prices when we can make them genuinely equivalent. If we can't, we don't guess.

  • A quoted price is not automatically a comparable price. We convert supported pricing bases to a single-unit basis where possible.
  • If the pricing basis can't be reliably normalised, the comparison is blocked rather than estimated.
  • We select the price band matching your real call-off volume, and spread document-level charges over the volume they were incurred for.
  • Freight is added only where it's stated. It is never assumed.
  • Different currencies are never converted or compared.

3. When we refuse to compare: the three outcomes

Every comparison is classified into one of three customer-facing outcomes. No arithmetic is attempted when the inputs are not comparable.

  • Confirmed match. Specification and commercial terms line up on a known landed basis. Only confirmed matches can become headline savings or commercial opportunities.
  • Partial match. Same product family, but something material could not be confirmed identical. These are informative, never headline savings.
  • No reliable benchmark finding. No comparison is attempted at all. Different currencies, unreadable dimensions, undeterminable pricing bases, missing prices or missing freight fall here by design.

Confirmed matches are reviewed by a member of the Packseen team, not accepted automatically.

4. Potential vs Verified

Potential is what your documents and the market references suggest could be saved. Verified is what actually happened after a change was implemented and measured against a locked baseline.

  • A verified saving can never exceed the spend it was measured on.
  • Verification is Packseen's controlled workflow, confirmed by you against recorded evidence — it is not an independent or third-party audit.

The formal definitions, measurement period and attribution rules are set out in Terms of Use, section 6.

5. The full evidence trace, end to end

Every customer-specific figure can be traced to its recorded source, and reference comparisons retain their own provenance. This is the whole chain, with nothing hidden in the middle.

  1. 01Document received. You upload an invoice, quotation, specification or operational record. It is stored privately against your workspace.
  2. 02Line item read. Product description, quantity, price and pricing basis are extracted as printed. Anything absent stays absent.
  3. 03Normalised to a comparable unit. Supported pricing bases are converted to a single-unit basis at your real call-off volume. If that cannot be done reliably, the line stops here.
  4. 04Compared against a reference range. The normalised unit price is compared with recorded reference pricing for a like-for-like specification, same currency only.
  5. 05Opportunity raised and reviewed. A confirmed match becomes a potential opportunity with its effort, time to value and the document line behind it. A Packseen reviewer checks it before you see it as an opportunity.
  6. 06Change implemented by you. You decide whether to act. Nothing is committed on your behalf and no supplier is contacted by Packseen.
  7. 07Saving verified from post-change evidence. The saving is measured against a locked baseline using post-change invoices. Until that evidence exists, the figure stays potential and is never shown as verified.

6. What our reference pricing is, and what it is not

  • Reference pricing is built from recorded packaging pricing evidence collected and reviewed by Packseen, held per specification, currency and pricing basis. The library currently covers the United Kingdom and Ireland.
  • Each reference carries its type, region, date and review status, so you can see how current and how relevant it is. Supplier identities are never shown to you, and yours are never shown to anyone else.
  • Where coverage for a specification is thin, the comparison is refused rather than stretched to a loosely similar product.
  • It is not a published index, not a third-party market report, and not a claim to cover every packaging category. We describe the coverage we have, not the coverage we would like.

7. Our evidence standard

  • Every saving figure must trace back to recorded evidence.
  • Reference pricing is described only at the level Packseen can support.
  • Other customers’ supplier names and prices are never shown.
  • Synthetic examples are labelled clearly and are never presented as customer results.

To see the shape of the output before sending anything, read the specimen report. For how the commercial model works, see Pricing. For how your data is separated and protected, see Security & Data Protection.

Check the method before you send documents. If you would rather start with your own figures, use the Quick Check.

See how Packseen handles data.