Cost Per Point (CPP)

Cost per point (CPP) is the cost of buying a single rating point in broadcast media — and one rating point means reaching one percent of a defined target audience. So cost per point answers a buyer's basic efficiency question: how much does it cost to put a message in front of one percent of the people you are trying to reach? It is calculated by dividing the cost of a media schedule or spot by the rating points it delivers against the target. Because it is denominated in rating points rather than raw impressions, cost per point is the natural efficiency yardstick in television and radio, where audiences have long been measured in ratings. A daytime spot and a prime-time spot can be compared on cost per point even though their absolute prices differ wildly, because the metric normalizes price against audience delivered.

Cost per point matters because it lets media buyers compare the efficiency of different dayparts, stations, programs, and markets on a common footing. A high-priced prime-time spot may actually be efficient if it delivers a lot of rating points, while a cheap late-night spot may be expensive per point if almost no one is watching. By dividing cost by points delivered, the metric strips out the distortion of absolute price and reveals what the buyer is really paying for audience. It is also the building block for planning a campaign's weight: knowing the cost per point in a market, a planner can estimate what it will cost to buy a target number of gross rating points, which is how broadcast budgets are built from the ground up.

Cost per point is easy to confuse with the rating-point measures it is priced against, but they answer different questions. A rating point — and its aggregates, gross rating points and target rating points — measures audience delivery: how much of the target a schedule reached and how often. Cost per point measures the price of that delivery: how much each point of audience costs to buy. One is a volume measure, the other an efficiency measure. You buy a number of rating points to hit a reach-and-frequency goal, and cost per point tells you how cheaply you bought them. So target rating points say how much you delivered against the target, while cost per point says what each of those points cost. Reading them together connects audience weight to budget.

Cost per point also differs from exposure and from impression-based pricing. An exposure is a single audience member's encounter with the message — one opportunity-to-see — whereas a rating point is a percentage of the whole target audience, and cost per point prices that percentage. Impression pricing like CPM charges per thousand individual exposures and is the currency of digital display; cost per point charges per percentage-point of a target audience and is the currency of broadcast. They are not interchangeable: CPM counts absolute impressions, cost per point counts audience percentage. Planners moving between television and digital often convert between the two frameworks, but the underlying units differ, and treating a rating point as if it were an impression, or a cost per point as if it were a CPM, leads to mispriced plans.

Using cost per point well means treating it as the broadcast efficiency yardstick — cost divided by rating points delivered against the right target — and always being clear about which audience the points are counted against, since a point against a broad population is not the same as a point against a narrow target. It means comparing dayparts, stations, and markets on cost per point rather than absolute price, using it to plan campaign weight (estimating the budget needed for a target number of rating points), and reading it alongside the rating-point volume it prices. Because typical cost per point varies by market, season, and audience, benchmark it within the right context rather than across mismatched ones, and pair it with reach-and-frequency goals so efficiency serves the plan rather than driving it.

The failures are comparing cost per point across mismatched audiences or markets as though the points were equivalent, chasing a low cost per point into dayparts that deliver the wrong audience, confusing the efficiency metric (cost per point) with the volume metric (rating points delivered), and treating a broadcast cost per point as interchangeable with a digital CPM. The discipline is to use cost per point as the price of one rating point against a clearly defined target, benchmark it in the right context, and connect it to the gross or target rating points a campaign needs, so the metric guides efficient broadcast buying without being divorced from the audience it is supposed to reach.

Cost per point (CPP) — the cost to buy one rating point, reaching one percent of a target audience — is the efficiency yardstick of television and radio media buying.

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