PlungeWatch is a price-reduction tracker for the three assets held at the top of the wealth curve: prestige residential property, brokerage yachts and pre-owned business aircraft. We scan tens of thousands of listings every day, capture each markdown before the portals overwrite it, and grade every cut by how much pressure the seller appears to be under. We are the only tracker that runs all three asset classes on a single comparable series.
We are not a brokerage. We hold no licence, list nothing of our own, represent neither side of any transaction, and take no position in anything we publish. Our revenue comes from subscriptions and data licensing — never from sellers paying to look better, and never from burying a cut.
The advertised price moves down. The simplest signal and the most common — a first cut is usually an optimistic launch being corrected, not a seller in trouble.
Two or more reductions inside one campaign. The strongest negotiating signal on the board: the seller has already proven, twice, that they will move.
Price on application becomes a published figure. Auction converts to private treaty. A yacht moves from central agency to open listing. Sellers don't publish a number until they've stopped believing in competition.
The asset comes off and returns at a lower figure, often with a new broker. Portals treat this as a fresh listing and the history disappears. We keep it joined.
Time past the segment's normal marketing period. In aviation, where most for-sale inventory is now sixteen years or older, time alone has become a discount.
Cuts under 7% from launch are graded as trims; 7–15% as corrections; repeat revisions are flagged at any depth; and anything past 15%, or a third revision, is classified as capitulation. The thresholds are published, fixed across asset classes, and reviewed annually — a grade you can't reconstruct is a grade you can't trust.
We publish events, not motives. "Asking price revised down 11%" is a fact. "The seller is desperate" is an opinion about a person, and we don't publish opinions about people.
We don't link owners across assets. Our cross-asset readings are cohort-level aggregates by market and price band. Linking a named person's house, boat and aircraft is technically possible from public records, and we have designed it out of the schema rather than merely against policy. The institutional customers who license our data want the index, not a dossier.
We don't gate the market. Active listings, current prices and broker contact are free and always will be. The paywall sits on the past, because the past is the thing we alone keep.