Data Sources

A source list is not enough. Important facts need a current source, a retrieval date, and an honest state when evidence is incomplete.

Source priority

We prioritize current manuals and plan terms, official help centers, official product pages, reproducible editorial tests, vendor support replies, and then reliable third-party material.

Missing does not mean zero

Unknown means we have not verified a value. Not disclosed means the reviewed vendor source does not publish it. Not applicable means the field does not fit the product. Disputed means reliable sources conflict.

Prices and plans

Prices are stored in currency minor units and tied to a market. Promotions are separate from list prices. Plan versions remain identifiable so an old comparison can be audited.

Freshness

Price and plan data require frequent checks. Hardware facts change less often, while software capabilities, privacy terms, and integrations need recurring review.