Category indices
Rebased, comparable indices per product category, updated as transactions land. Not asking prices — what things actually changed hands for.
In development · 2026
Where a market is going —
not where one company thinks it is.
Costlyze turns millions of real transactions in physical goods into category indices, price trends and benchmarks. Built for the people who need to see a market clearly before they commit capital to it.
Signal layer
Live
Transaction data is already being collected
Coverage
Building
Indices publish once enough contributors are in a category
Access
By invitation
Early partners shape what gets measured first
01 — What Costlyze does
Physical goods have no price index. That is the gap.
Equities have tickers. Commodities have benchmarks. Second-hand electronics, consumables, industrial spares and surplus stock have nothing — every buyer guesses, every seller guesses, and the spread between them is pure friction.
The transactions exist. They are simply locked inside thousands of individual companies. Costlyze does not ask those companies to hand over their books; it reads the aggregate they collectively produce.
Trend and volatility
Direction, momentum and dispersion over time — including how wide the spread is, which is often the more useful number.
Benchmarks
Compare a position, a portfolio or a procurement programme against the market rather than against last quarter's assumption.
Data feed
Programmatic access for teams that want the series inside their own models rather than in a dashboard.
02 — How it works
We never see the transactions. That is the point.
Costlyze branches from an anonymous signal layer operated by Ventralia. It has no access to any individual company's records — not restricted access, none. That constraint is what makes the underlying data contribution acceptable to the companies producing it.
Read the platform architecture03 — Built for
People who lose money when a market moves and they find out late.
Analysts and researchers
A defensible series for categories that were previously anecdotal. Cite a number instead of an impression.
Volume buyers and procurement
Know whether a quote is above or below the market before signing, and whether waiting a quarter is likely to help or hurt.
Financial institutions
Value inventory used as collateral against observed transactions rather than against a declared book value.
Insurers and asset managers
Replacement and residual values that track the real market, updated continuously rather than annually.
04 — What we will not do
No company-level data
We will never sell, expose or reconstruct what any individual business bought or sold. The architecture makes it impossible, not merely prohibited.
No index without depth
A category publishes only once enough independent contributors are in it. A thin index is worse than no index, because someone will trade on it.
No hidden method
Every series ships with its sample size and how it was constructed. If we cannot show the working, we do not publish the number.
05 — Early access
Tell us which market you need measured.
We are choosing which categories to cover first, and the deciding factor is who is waiting for them. Leave your address and the category you care about — that is genuinely how the order gets set.
No newsletter, no marketing sequence. One message when your category goes live.