The depreciation of your own References, computed on real, dated, clickable listings — with the sample, the interval and the observation date printed under every figure. Sold only on References already covered: immediate delivery, nothing sold on a promise.
One full report on a Reference from your catalogue, free. Ask for it and it enters the coverage queue; you receive the same document paying buyers get, and you judge the measurement before buying.
Request a Pilot ReportOne Reference, one year, one specification. Every indicator, the signed PDF and the CSV of real observations behind every figure.
An entire category for one brand and its named competitors. The market view: who depreciates fastest, who sells fastest, where your range stands.