Methodology — COMPARIO

Data chain

Canonical entity → Variant → Observation → Evidence → Comparison. We consider original price, currency, unit, location, date, known taxes, promotions, condition and specification; currency conversion and comparability show their limitations.

Verification status

Statuses are Pending verification, Checked source, Community verified, Outdated data, Disputed data and Withdrawn.

Principles

We do not invent values to fill gaps, do not treat different products as equivalent, and retain date and source. A price difference does not prove abuse. Future monetisation cannot alter a neutral result. We do not publish anti-fraud thresholds, internal scoring or rules that facilitate manipulation.