Methodology
Version labsec.v0 — how we normalize dealer listing observations
and the category median-ask index.
Not an appraisal. Ask prices are public list asks only; RFQ-only rows are
excluded from ask series.
- Identity: listing_id × dealer × category × make_model
- Change kinds: listed, price_changed, delisted
- Index: median USD ask among active listings by category (
labsec.category.median_ask.v0)