Editorial policy.

How we present sources, estimates and corrections.

Transparent sources

We identify the source and date of saved quotes, distinguish an estimate from a game rule, and explain the calculator's arithmetic. Rankings and demand scores should be read as opinions, not verified transaction prices.

Updates and corrections

The snapshot is not automatically refreshed. When updated, new source dates should be recorded, and old figures should not be described as current. If a value or game rule cannot be verified, it should not be presented as a fact.

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