Big question
When the company running the auction also sells into it, can you audit the price you paid?
The position
Not from any platform report. The runner-up's offer and the seller's minimum are disclosed to nobody, so a price set by a floor looks the same as a price set by a competitor. The only route is a contractual right to log-level records and an audit against the auction transparency standards finalised on 29 January 2026.
Why it is live
One firm can set the auction rules, route the inventory and hold a position on the sell side, and the winner is told what they paid and nothing else. A United States court found against Google in the ad tech case in April 2025, and Reuters reported on 2 September 2026 that Google escaped a forced sale, so the conflict stays inside the market rather than being broken up.
The case for auditability
DocumentedThose standards now name auction type, how winners are decided, how prices are set and the use of reserve prices, so an audit has something to test against.
The case against
UnknowableNo seller publishes a reserve, no report separates a price set by a reserve from a price set by a rival, and in a first price market no seller has a reason to start.
Where the weight sits
Strongly against. Auditability now exists on paper and does not yet exist in the market.
What would change this
One large seller completing and publishing an audit against the January 2026 auction transparency standards, or a remedy order requiring fee and auction disclosure.
Where this is taught
Where this has moved
Programmatic
Sources
- US Department of Justice, 17 Apr 2025primary
- Reuters, 2 Sep 2026secondary
- ANA principal media governance study, Mar 2026secondary