Observed, not promised
Every figure is an observed online price with a capture time. Availability and checkout pricing can change after an observation.
METHODOLOGY
Price history should be easy to inspect.
Are Prices Down records what was displayed on Coles Online at a particular time. It will not guess at prices between observations.
Evidence retained
Published observations will be linked to a sanitised source capture, response metadata, checksum, and parser version.
Context matters
Unit price, pack size, and promotion details are recorded where displayed, so price comparisons remain meaningful.
Bad data stays out
Unexpected responses and extraction failures are quarantined for review rather than shown as a price change.