Most promotional budgets focus on the wrong question
When brands sit down to plan a promotional campaign, the conversation almost always starts with “how much should we spend on prizes?” It’s a reasonable question, but it skips the one that actually determines whether the promotion works: how should we structure the prizes?
A $50,000 prize pool can perform brilliantly or fall flat depending on how it’s divided up. One grand prize of $50,000 creates a very different promotional dynamic than fifty prizes of $1,000, or one prize of $10,000 paired with a hundred $50 instant wins and a $35,000 cashback pool. Same budget. Completely different consumer response.
This is what we mean by prize architecture — the deliberate design of your prize pool to match your promotional objective, your audience psychology, and the mechanic you’re running. Get it right, and you can outperform campaigns with twice the budget. Get it wrong, and you’ll wonder why nobody entered.
What does your prize pool need to do?
Before choosing prizes, you need to answer the One Job Rule from The Shelf Truth: what is the single objective of this promotion? Are you a Breaker (driving trial), a Builder (increasing frequency), a Loader (growing basket size), or a Harvester (collecting data)?
Your prize architecture should serve that objective directly. A trial-driving promotion needs to minimise friction and maximise perceived winning probability — lots of small, easy-to-claim prizes work well here. A frequency-building promotion benefits from repeat engagement mechanics — daily instant wins or collect-to-win structures that bring people back. A data-harvesting promotion can justify slightly higher friction in exchange for a genuinely compelling prize.
The mistake most brands make is designing the prize pool in isolation from the mechanic. They pick the prizes they think are exciting, bolt them onto whatever promotional format their agency suggests, and hope for the best. That’s not architecture. That’s decoration.
Hope vs. Greed: designing for two types of shopper
The Shelf Truth describes two psychological profiles that drive promotional participation: The Gambler and The Accountant. The Gambler is motivated by dopamine — the excitement of possibly winning something big. The Accountant is motivated by certainty — the guarantee of getting something back.
Most promotions only cater to one. A pure prize draw with a single grand prize appeals exclusively to The Gambler. A straight cashback appeals exclusively to The Accountant. Neither captures the full audience.
The most effective prize architectures speak to both. This is the Dopamine Sandwich: a headline prize that generates excitement and gets attention (for The Gambler), wrapped around frequent smaller rewards that provide certainty (for The Accountant). Think of it as the big prize gets them to look; the small prizes get them to act.
Consider the structure of many successful FMCG promotions running in Australia right now. You’ll typically see a major prize — a car, a holiday, a large cash amount — supported by hundreds or thousands of smaller instant wins. The major prize does the marketing heavy lifting: it’s what goes on the POS, what drives the social media campaign, what makes the promotion worth noticing. But the instant wins do the conversion work. They’re what makes a shopper think “I could actually win something” and reach for the participating product.
Why one prize feels impossible and a hundred feels probable
There’s a useful mental model from The Shelf Truth called the Rule of Three: one prize feels impossible, three prizes feel possible, and a hundred prizes feel probable. This isn’t about actual odds — it’s about perceived odds, which is what drives behaviour at the shelf.
Research supports this pattern. Brandmovers’ analysis of promotional engagement found that promotions offering multiple chances to win — through instant wins or games — tend to see meaningfully higher customer engagement than single-entry sweepstakes. The psychological mechanism is straightforward: when shoppers see multiple prize tiers, they instinctively feel their chances are better, even when the mathematical odds per entry haven’t changed much.
Interestingly, the research compiled by Buyapowa suggests that offering more than one of the same prize doesn’t necessarily improve perceived odds. What does improve them is offering different prizes at different levels. When there are distinct tiers — a major prize, a mid-tier prize, and lots of small prizes — participants feel they have a realistic shot at winning something. That distinction matters more than raw quantity.
This is why the Dopamine Sandwich works. It’s not just about having a big prize and small prizes. It’s about creating distinct tiers that feel like different opportunities, not diluted versions of the same one.
The Insult Threshold: when your prize isn’t worth the effort
Prize architecture isn’t only about what you offer — it’s about the friction required to claim it. The Shelf Truth calls this the Insult Threshold: if the reward isn’t worth the effort of claiming, you’ve insulted the customer.
This is where cashback promotions frequently go wrong. A $5 cashback on a $20 product sounds reasonable until you ask the customer to photograph their receipt, fill out a form with their name, address, email, phone number, and bank details, upload proof of purchase, and wait six to eight weeks for payment. By the time they’re three fields into the form, most people abandon the process entirely.
Every form field in a promotional entry process costs roughly ten per cent of your audience. That compounding drop-off is brutal. A five-field form retains about 59% of people who started. A ten-field form retains about 35%. If your cashback value doesn’t justify that friction, you’re designing a promotion that looks generous on paper but feels insulting in practice.
The best prize architectures match reward to effort at every tier. Instant wins should require minimal friction — scan, tap, win. Cashbacks should use the simplest possible claim process (this is where PayID and Osko instant payouts make a genuine difference — same-day payment transforms the cashback experience). Major prizes can justify more effort, because the perceived reward is high enough to clear the friction hurdle.
Budget hacking: spending less and getting more
One of the underappreciated aspects of prize architecture is that clever structure can stretch a budget significantly. Three approaches worth considering:
Slippage in cashback promotions. Not everyone who’s eligible for a cashback will claim it. The percentage who forget, lose their receipt, or simply can’t be bothered is called slippage. This is what makes cashback promotions fundamentally different from price discounts — a discount costs you for every unit sold, but a cashback only costs you for claims actually made. Industry guidance from PromoNow suggests that moderate redemption rates in the range of 30 to 40 per cent are common for well-designed cashback offers, which means a significant portion of the headline value goes unclaimed. That unclaimed portion effectively subsidises the rest of your prize pool.
Insured promotions. For major prizes — particularly the attention-grabbing headlines like “Win $100,000” — prize indemnity insurance lets you offer a large prize without carrying the full cost on your balance sheet. You pay an insurance premium based on the probability of the prize being won, which is typically a fraction of the prize’s face value. Trevor Services recently covered this in detail in our article on how insured promotions work.
Self-liquidating premiums. Branded merchandise or exclusive products that carry a perceived value higher than their cost to produce. A branded cooler bag that costs $12 to produce but has a perceived value of $40 makes an effective mid-tier prize that stretches your budget while still feeling valuable to the winner.
The Budget Hacker approach from The Shelf Truth combines these: an insured major prize (low cost, high headline impact), a cashback with natural slippage (manageable cost, high perceived generosity), and self-liquidating instant win prizes (low unit cost, high engagement). Three tiers, three budget-efficient mechanics, one cohesive promotion.
Putting it together: the architecture checklist
Before finalising your prize pool, run through these questions:
Does it serve the One Job? Every prize tier should connect back to your single promotional objective. If it doesn’t drive trial, build frequency, load baskets, or harvest data, it’s not doing its job.
Does it speak to both pilots? Your architecture should have something for The Gambler (excitement, aspiration) and something for The Accountant (certainty, guaranteed value). If you’re only appealing to one, you’re leaving participation on the table.
Does it pass the Insult Threshold? At every tier, is the reward proportionate to the effort required? Would you personally bother claiming it?
Is the prize structure visible? Shoppers need to see the architecture at a glance. If your POS can’t communicate the prize tiers in three seconds — the 3-Second Equation — simplify.
Have you stress-tested the budget? Model your expected redemption rates, factor in slippage, price your insurance premium, and confirm the whole thing works financially before you commit. This is where Trudy, Trevor Services’ predictive promotional intelligence platform, helps clients model different prize structures against historical campaign data to find the architecture that maximises impact within budget.
Prize architecture isn’t glamorous work. It doesn’t make the agency showreel. But it’s the difference between a promotion that shifts product and one that just shifts budget from your P&L to a prize nobody claims. If you’re planning a promotion and want to pressure-test your prize structure before you go to market, we’re always happy to talk it through.
