What Is MAP Monitoring? – Definition and How It Works
Learn what minimum advertised price monitoring is, how violations are detected, why evidence matters, and where competition law sets limits.
Minimum advertised price monitoring checks whether resellers are advertising a brand's products below an agreed floor. It is a compliance function built on price collection.
1. What a MAP Policy Governs
A MAP policy constrains the price at which a product may be advertised, not the price at which it may be sold. That distinction is central: a reseller may sell below the floor while not advertising below it.
The policy is a term of the relationship between brand and reseller, and monitoring exists to determine whether it is being followed.
2. What Counts as Advertising
| Surface | Usually in scope |
|---|---|
| Product page price | Yes |
| Category listing price | Yes |
| Marketplace listing | Yes |
| Search advertisements | Yes |
| Email and social promotions | Usually |
| Price shown only in the basket | Often excluded |
| Price after a code is applied | Depends on the policy |
The basket and discount-code cases are where most disputes arise, and where a policy that does not address them explicitly creates ambiguity.
3. How Violations Are Detected
Collect advertised prices across authorised resellers and marketplaces, normalise them, and compare against the floor per product per region.
The requirements are the same as for any price collection: matched products, currency and regional context, availability and seller identity, and timestamps. A violation asserted without those is not defensible.
4. Evidence Is the Deliverable
A MAP conversation with a reseller needs a record: the URL, a timestamped screenshot, the displayed price, the seller identity, and the region observed.
Collected after the listing changes, none of it exists. Capturing evidence at detection is what makes the process work.
5. Validate Before Acting
Most apparent violations are collection failures — a promotional price mistaken for a list price, a regional variant compared against the wrong floor, or a parsing error reading a strikethrough price.
Require corroboration and a plausibility check before raising anything with a reseller. A false accusation costs a relationship.
6. Marketplaces Complicate It
A marketplace listing may be posted by an unauthorised third party, a grey-market seller, or a reseller who did not intend it. Identifying the actual seller is part of the work, and marketplace listings frequently obscure it.
7. Where Competition Law Sets Limits
Resale price maintenance — dictating the price at which a reseller may sell — is restricted or prohibited in many jurisdictions, and treatment of advertised-price policies differs by region.
Monitoring public advertised prices is observation. Using it to enforce sale prices, or coordinating prices between resellers, is a different matter. This is an area where legal advice belongs before the programme launches rather than after.
8. Summary
MAP monitoring collects advertised prices across resellers and marketplaces and compares them against agreed floors per product and region.
It requires matched products, regional context, validated detections, and evidence captured at the moment of detection — and its design should be reviewed against competition law, whose treatment of price policies varies by jurisdiction.