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How to Efficiently Media Buy on TV
Most TV and streaming ad budgets are not inefficient because the rates are bad. They are inefficient because advertisers are not armed with the tools or the time to compare options properly. Decisions are often driven by preference or gut instinct. Station A feels bigger. Network B sounds premium. Platform C seems modern. Those instincts drive a lot of buying decisions, but they are not measurements.
Media performance is measurable. It is comparable. And when you put the numbers side by side, the differences in efficiency are often surprising.
Once you define the demographics and target audience you need to reach, there are several ways to evaluate effectiveness. One of the most important is cost per point, or CPP. CPP helps determine how efficiently your advertising dollars are being spent, regardless of whether the buy is broadcast, cable, or streaming.
Below, we break down CPP, how ratings work, when GRPs actually matter, and how broadcast TV buying fits into today’s broader media landscape alongside cable, OTT, and Connected TV (CTV). The goal is simple. Strip away preference and habit, and replace them with a clear, apples-to-apples way to evaluate what your media is really doing for you.
Understanding Cost Per Point (CPP)
CPP is calculated by taking the total amount spent on a particular TV station and dividing it by the total number of gross rating points (GRPs) purchased.
What are GRPs?
GRPs (pronounced “grips”) measure the total advertising impact of your schedule. They’re calculated by multiplying:
Number of spots × Daypart rating
A daypart rating represents the percentage of the specified demographic watching television during a particular time period. These ratings are provided by industry measurement companies like Nielsen and Comscore, which publish ratings books throughout the year.
GRPs (pronounced “grips”) measure the total advertising impact of your schedule. They’re calculated by multiplying:
Number of spots × Daypart rating
A daypart rating represents the percentage of the specified demographic watching television during a particular time period. These ratings are provided by industry measurement companies like Nielsen and Comscore, which publish ratings books throughout the year.
Using Ratings Books Effectively
Ratings can vary widely throughout the year — for example, November may perform extremely well while July underperforms. For this reason, buyers often request a 12-book average, which smooths out seasonal spikes and provides a more realistic, full-year benchmark of program performance.
Because ratings differ by demographic (e.g., Adults 25–54 vs. Adults 18–49), choosing the correct target audience is essential. Once the average rating is identified, dividing the rating into the spot rate yields the cost per point.
Market Size Matters
Markets differ greatly in population size, which directly affects CPP. Smaller rural markets typically have lower CPPs than major metros like New York City, Albany, or Buffalo.
A media buyer’s role is to ensure the client reaches the right audience at the lowest possible CPP, maximizing efficiency without sacrificing quality or frequency.
Example: Comparing Two Stations
Let’s look at a simplified example using a $1,000 budget and 12-book Comscore averages:
Station A (Market #1 in viewership)
- 5–6 AM News: $50 per spot × 4 spots → Rating 2.8
- 6–7 PM News: $200 per spot × 4 spots → Rating 12.1
GRPs:
- Morning: 2.8 × 4 = 11.2
- Evening: 12.1 × 4 = 48.4
Total GRPs: 59.6
CPP: $1,000 ÷ 59.6 = $16.78
Station B (Market #2 in viewership)
- 5–6 AM News: $25 per spot × 8 spots → Rating 2.2
- 6–7 PM News: $100 per spot × 8 spots → Rating 8.6
Total GRPs: 86.4
CPP: $1,000 ÷ 86.4 = $11.57
Result:
Even though Station A is the highest-rated station, Station B delivers more GRPs for less money, making it more efficient on a cost-per-point basis.
Now imagine extending this to a large cable buy with 10–20 networks across multiple dayparts — this is where experienced media buyers ensure accuracy, strategy, and value.
Why Agencies Matter in Media Buying
Media buying is typically a no-cost service for clients when working with an agency.
The standard 15% media commission is built into the station’s pricing and comes out of the client’s existing media budget, not an additional fee.
That means clients get:
- Expert negotiation
- Schedule optimization
- Rating analysis
- Efficiency evaluation
- Added value opportunities
…without paying more for the service.
Win-win.
CPM: Another Key Metric
In addition to CPP, CPM (cost per thousand impressions) is essential when comparing broadcast, cable, OTT, and CTV.
For example:
- OTT CPM = $30
- Cable CPM = $50
→ OTT may be the more efficient choice.
But in another market:
- Cable CPM = $10
→ Cable becomes the stronger investment.
The rise of streaming platforms like Hulu, YouTube TV, and Sling has dramatically shifted how buyers approach CPM analysis. As cable subscriptions decline year over year, CPM becomes a critical tool for evaluating which combination of platforms provides the best reach for the budget.
Putting It All Together: Smarter Media Buying, Stronger Results
Efficient TV buying isn’t just about finding the lowest rates; it’s about understanding ratings, market dynamics, and how each platform fits into today’s shifting media landscape. When CPP, CPM, and viewership trends work together, your investment goes further and reaches the audiences that matter most.
At MPW Marketing, we apply these principles every day to build media strategies that are transparent, data-driven, and tailored to each client’s goals. With a thoughtful approach to TV, cable, OTT, and CTV, we help brands maximize their visibility and get more impact out of every dollar they spend.
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