The stale price

The price changed recently. Some users still receive an older cached page.

Consider acceptable staleness, the authoritative price, communication, and the correction policy.

Trace where the cached value comes from and when it should refresh. Confirm that checkout uses authoritative pricing and clearly communicates any change before purchase.

Coordinate the customer response with appropriate policy owners. Engineering may need cache invalidation or a different freshness policy, but the PM must also decide how to avoid misleading users during the transition.

A technically valid cache policy can still produce an unacceptable buying experience.