availability guide · correction notice
How long does a refurbished Mac stay listed?
The corrected answer uses bounded observations instead of treating the first missing poll as an exact sale timestamp.
Corrected June and follow-up cohorts
The June baseline contains 1,698 detections. The separately analyzed follow-up contains 655 detections. They are not blended into one trend line.
Read the correction and methodologyCensor-aware shelf life
The publication-grade follow-up includes 434 grid-only availability spells. Its interval-censored median is 696.5 minutes, with a 95% confidence interval from 280.467 to 992.59 minutes.
Mixed-source listings and duration boundaries wider than the publication rule are excluded from shelf-life estimation. Counts use a wider universe, so the count and duration cohorts must not be interchanged.
Still withheld: corrected model, chip, and memory comparisons. The alert-speed benchmark remains a separate namespace and is not evidence for shelf life.
Questions
How fast do refurbished Macs sell out?
In the follow-up cohort, the censor-aware median shelf-life estimate was 696.5 minutes. This is a bounded observation estimate, not an exact sale timestamp or a promise about a future listing.
Which refurbished Mac model sells out fastest?
RefurbSitter is not publishing a corrected model, chip, or memory ranking. Those cuts remain withheld until each subgroup has a reproducible cohort and adequate evidence.
Why use a censor-aware estimate?
Polling reveals intervals: a listing is seen in stock at one check and absent at another. Censor-aware estimation retains those bounds and incomplete observations instead of inventing an exact sale time.
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RefurbSitter alerts and links to Apple. It does not buy, reserve, or guarantee a Mac.
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