DEX evidence centre

Check what has actually been observed about a deal or product, when it was checked and which market or variant it covers. This centre publishes only observations that have passed a separate review; an entry in the catalogue is not itself proof that a price, code or availability claim works for you.

Retailers control their checkout prices, eligibility and availability, which can change after a check. A missing or blocked observation means the claim has not been independently established here; it does not mean the original listing has been removed, corrected or confirmed.

What the evidence terms mean

DEX Source Checked

A named source supported a particular claim at a recorded time. This is not a checkout test.

DEX Retailer Checked

A retailer observation is recorded with its scope. It does not establish product quality or every shopper’s eligibility.

DEX Code Tested

An actual permitted checkout test must record the code, market and account conditions. One successful test is not a universal guarantee.

DEX Price Drop

A comparison needs dated prices for the same variant and market. An advertised percentage alone is insufficient evidence.

DEX Needs Recheck

Evidence is missing, stale, contradicted or inaccessible. Blocked access is never counted as a successful check.

DEX Expired

Expiry is an evidence outcome. Accounting for an expired offer is not calling it active; the original catalogue record remains protected.

Coverage and limitations

A reconciled, versioned full-catalogue coverage denominator has not been established. We therefore do not publish a catalogue-wide verification percentage. The private observation pilot records individual checks; it does not continuously test every offer or make purchases automatically.

Sponsored exposure cannot purchase a positive evidence result. These explanations describe this evidence centre and do not replace review of claims elsewhere on the site.

Corrections and appeals

Prepare a correction report with the original URL, evidence reference, market and what happened. Please omit passwords, payment details and sensitive screenshots. A later contradiction can reopen an investigation; any published correction keeps its earlier history.