If you have a National CPT of $565 for a 30 second TVC, what would be the 15 Second CPT?

If you have a National CPT of $565 for a 30 second TVC, what would be the 15 Second CPT?

• A. $339
• B. $283
• C. $678
• D. None of the above

Answer: (A)

Shorter TV formats aren’t priced strictly in proportion to their length. In national TV buying, a 15-second cut often carries a per‑thousand rate that’s higher than the simple half of a 30-second CPT, because shorter spots have different inventory dynamics and scheduling value. Applying the typical adjustment for a 15-second format: 565 × 0.60 = 339. So the 15-second CPT is 339. A naive halving would give about 283, which ignores the typical premium for shorter formats, while doubling would give 678, which isn’t how shorter spots are priced.

Shorter TV formats aren’t priced strictly in proportion to their length. In national TV buying, a 15-second cut often carries a per‑thousand rate that’s higher than the simple half of a 30-second CPT, because shorter spots have different inventory dynamics and scheduling value. Applying the typical adjustment for a 15-second format: 565 × 0.60 = 339. So the 15-second CPT is 339. A naive halving would give about 283, which ignores the typical premium for shorter formats, while doubling would give 678, which isn’t how shorter spots are priced.