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Scatter Market
Scatter market is the pool of TV or media inventory bought close to air date, after the upfront buying window has closed, rather than committed to months in advance. Because the buyer has little lead time and the seller has less certainty about fill, prices float with current demand and are usually higher than the equivalent upfront rate for the same audience delivery.
Worked example
A planner needs 500 GRPs on a leading Polish commercial TV channel for a launch starting in three weeks, too late for the upfront round. The channel's upfront CPP for that daypart was €850, but the scatter quote for the same week comes back at €1,050 CPP. Buying 500 GRPs in scatter costs 500 × €1,050 = €525,000, against 500 × €850 = €425,000 if it had been secured upfront, a €100,000 premium for identical audience delivery.
How it is used
Instead of a formula, what's tracked is the live spread between the upfront rate card and the current scatter quote for the same daypart and week, expressed as a CPP or CPM premium; sellers reprice scatter inventory daily or weekly as unsold stock tightens or loosens. Buyers use scatter to cover late briefs, react to ratings underdelivery on upfront schedules (make-goods aside), or chase sudden demand spikes like a competitor launch. The mistake practitioners make is assuming scatter carries a fixed markup over upfront and budgeting a flat percentage, when the premium moves with category demand, event calendars, and how much unsold inventory the seller is sitting on that week.
The common mistake
Don't budget scatter as a fixed percentage over upfront rates; get a current quote for the specific week and daypart, since the premium moves with live demand and unsold inventory.