Methodology
The backend is the source of truth. The frontend never fabricates prices, merchant quotes, confidence scores, source counts, or history — missing coverage is shown directly, not hidden.
Prices come from public merchant listings via web search (OpenAI / Tavily), not a licensed market feed. They are unvalidated estimates, labeled as such, with a confidence that is capped below "authoritative" — verify with the merchant before relying on a number.
The "Live" status is reserved for a future licensed or first-party data feed. It is deliberately NOT used for web-sourced prices today — we do not license Wine-Searcher or Liv-ex, and we will not present a web estimate as an authoritative market figure.
Climat and vintage context from the local reference set, such as village, Côte, color, grape, size, and producer notes.
If the backend does not return price history, merchant coverage, comparables, or a price range, the frontend shows the field as unavailable.
Used for homepage product previews and sample search links. Example content is not presented as market evidence.
As coverage improves, unavailable fields can become estimated fields without changing the trust model — and if we ever add a licensed feed, that data earns the reserved “Live” status, walled off from the web-sourced estimates. BurgReport labels each field by source status before making any pricing claim.
