Programmatic DOOH pricing is where many first-time buyers get stuck. A proposal lists a CPM, an impression multiplier, a floor and a deal type, and each one affects what you actually get for your budget. Nothing here is mysterious, but the terms are not always explained clearly, and two quotes that look similar can deliver very different things.
In plain terms: programmatic DOOH is normally priced on a CPM basis, meaning a rate for every thousand estimated impressions. Because a screen cannot count individual viewers, the impressions are estimated using a multiplier that reflects how many people are likely to see each play. The final price depends on that multiplier, any floor price set by the seller, the type of deal and the competition for the screen at that moment. This guide explains each piece without quoting rates, because rates change by market, screen and season.
1The CPM Basis
CPM stands for cost per thousand impressions. It is the standard unit in online display and video, and pDOOH uses the same unit so that buyers can compare channels in one plan. A campaign with a given budget and a given CPM will buy a corresponding number of impressions.
The difference is what counts as an impression. Online, an impression is a recorded ad load. On a screen, a single play might have been seen by a crowd, by a handful of people or by nobody if the area was empty. So the industry uses audience estimates to turn plays into impressions, which is where the multiplier enters.
You may also see pricing quoted per play, per spot or per time period, especially in direct deals. Those can be converted to CPM for comparison, but the conversion depends on the audience assumption, so ask how it was calculated.
2Impression Multipliers
An impression multiplier is the number of estimated viewers attributed to one play of an ad on a given screen. If a screen's multiplier is higher, each play counts as more impressions, and the effective cost per thousand impressions is lower for the same price per play.
Multipliers are generally based on audience measurement from sources such as traffic counts, mobility data, venue footfall or industry audience studies. Geopath is a widely referenced audience measurement body in the out-of-home industry, while other providers supply their own models. Different sellers use different methods and update them at different intervals, which means the same location can carry different multipliers depending on whose data is used.
For buyers, the lesson is to ask three questions. Where does the multiplier come from? How recently was it updated? Does it vary by time of day, or is it a flat figure? A screen with a time-based multiplier will give a more realistic picture of rush-hour compared with late evening.
Multipliers also explain why a screen in a very busy place is not always the best value. If its price per play is high and its multiplier is only moderate, a smaller screen with a more focused audience can deliver impressions at a comparable effective cost. Comparing screens on effective CPM, not on price per play alone, avoids that trap.
3Floors, Bids and Auction Dynamics
In an auction, the seller can set a floor price, which is the lowest bid it will accept for a play on that screen. Bids below the floor simply do not win. Floors protect the value of premium screens, and they also shape what a buyer can expect to pay for reach in a prime location.
Above the floor, the price depends on competition. Many exchanges use a first-price model, where the winning bidder pays what it bid. Others may use different rules, so check the platform. In busy periods, such as holiday shopping or a major event, more advertisers want the same screens, and clearing prices tend to rise. In quiet periods they tend to ease.
Your DSP also applies its own bid logic. It may be set to a maximum CPM, a pacing target or an optimization goal. If a maximum bid is set too low for the floors in your chosen screens, the campaign will underdeliver, and the issue is often misread as a creative or targeting problem. Our guide to deal ID troubleshooting covers how to diagnose that kind of delivery shortfall.
Pacing is the last piece of the pricing picture. A campaign can be set to spend evenly across the flight or to front-load delivery, and each choice changes the price paid. Even pacing avoids buying everything at peak rates, while front-loading can win early reach at a higher clearing price. Agree the pacing approach before launch so the cost expectations match.
4Deal Types and What They Do to Price
The route you buy through affects both price certainty and quality control.
| Deal type | How it is priced | What you get | Trade-off |
|---|---|---|---|
| Open auction | Bid against others, subject to seller floors | Wide reach across many connected screens | Less control over exact placement, price moves with demand |
| Private marketplace | Agreed floor, you bid above it on a chosen set of screens | Curated inventory, usually better-known venues | Higher floors than a broad auction may carry, more setup |
| Programmatic guaranteed | Fixed price for reserved volume | Certainty of delivery on selected screens | Less flexibility, commitment up front |
| Direct or traditional buy | Negotiated rate per screen package or period | Fixed placements, often premium formats | Slow to change and harder to compare with programmatic |
Most plans mix routes: a guaranteed or private deal for the anchor screens and open auction for incremental reach. The mix is a planning decision, not a technical one.
Currency and market matter when a plan spans countries. Rates are set locally, audience methods differ between regions, and a multiplier from one country is not directly comparable with another. For multi-market plans, ask each seller to state its method in writing, and compare them market by market before combining the numbers in a single budget view.
5What Moves Price Up or Down
- Location quality. Screens in dense, high-traffic or high-value areas tend to be priced higher than those in quiet ones.
- Venue type. Airports, major transit hubs and premium retail venues are in demand and carry higher floors than smaller local networks.
- Time of day and day of week. Peak commuter and shopping periods attract more bids.
- Seasonality. Holiday periods and major events increase competition across the board.
- Targeting depth. Adding audience data layers or narrow triggers can reduce the number of eligible plays and increase the effective cost of reaching the specific group you want.
- Data fees. Audience or measurement data used in targeting may be charged separately by the provider, usually shown as a line item.
- Platform fees. DSP and managed service fees are part of the total cost, and are worth asking about early.
A last note on transparency: ask who sits between your budget and the screen. Agencies, DSPs, data providers and sellers can each take a portion, and the more clearly each step is described, the easier it is to judge whether the effective rate is fair. A buyer who understands the chain negotiates better than one who only compares headline CPMs.
6Reading a Proposal or Insertion Order
When a quote arrives, compare it on the same basis as any other. Ask whether the rate is quoted on estimated impressions or on plays. Check which audience source the multiplier relies on. Confirm whether the price includes data, verification and platform fees, or whether those come on top. Look at what happens if delivery falls short, including whether unspent budget is returned or reallocated.
It is also reasonable to ask for sample play logs and a clear description of how impressions will be reported at the end. Proof of play shows that the ad ran, while the impression estimate shows the audience assumption, and both should appear in the report. Reporting is covered in our reporting and analytics service.
Finally, check the reporting terms. Some sellers report estimated impressions based on plays and multipliers at the time of booking, while others recalculate using actual audience data after the flight. Knowing which applies tells you whether the final number will match your forecast, or move slightly in either direction.
7Managing Cost Without Cutting Quality
Lower CPM is not automatically better. A cheap impression on a screen that few people can see is worth less than a higher-priced play in a spot where the audience actually matches your customer. Evaluate cost alongside venue relevance, creative fit and measured outcomes such as store visits.
Practical steps help. Start with a clear objective, and build the screen list from it. Use private deals for the screens that matter most. Test open auction for scale, then review which venues and times produced the best outcomes and shift budget accordingly. Keep creative current so that you are not paying for exposure that no longer works. Review bid and floor settings weekly in the early phase.
If you manage this in-house, build a repeatable process. If you do not have the time, a managed service can take it over: see programmatic DOOH advertising and programmatic media buying. For the basics before you start, read what is programmatic DOOH, and for the full sequence of steps from brief to report, see the pDOOH buying workflow.
