Per Promo Monitor, Vinarchy’s Jacob’s Creek Australian Open draw runs a $50,000 prize in BWS and a $9,000 one through on-premise — same mechanic, same job. Both are live now, both draws, both Jacob’s Creek, and the headline number differs by more than five times while the thing the shopper is being asked to do is identical. That gap is the whole argument on a single brand. A bigger prize pool buys entries, but it buys them weakly and non-linearly, because shoppers can’t judge promotional magnitude without a reference point — which means the planning meeting should spend on entry frequency, distribution and legible odds before it spends on a bigger headline prize.
The reason this matters is that the headline prize is where the instinct goes when forecasts look soft. Per Promo Monitor, Prize Draw (Single) is the most common live mechanic — 87 of 249 tracked promotions — so reaching for the pool isn’t an outlier. It’s the market default. And the default is often the expensive way to buy the smallest amount of lift.
Does a bigger prize pool get more entries?
A little, and rarely in proportion to what it costs. Shoppers struggle to judge whether a promotional prize or prize count is good or bad without something to compare it against, so a larger headline number frequently isn’t read as larger odds. Distribution, entry frequency and legible odds tend to move participation more per dollar than inflating the pool.
Why the number scales without the appeal scaling
The clearest way to see this is the range the same major prize can sit across. Per Promo Monitor, Vinarchy’s Jacob’s Creek AO draws run from roughly $9,000 on-premise to $50,000 in BWS, with an IBA version at $15,300 in between — one brand, one tennis prize, three pools. If prize pool drove participation cleanly, you’d expect brands to converge on a value. They don’t, because the value isn’t the lever they think it is.
The same pattern shows up across the AFL Grand Final draws tracked right now. Per Promo Monitor, Vinarchy’s Grant Burge Grand Final promotion runs at roughly $10,000 through on-premise, $23,284 through an independent-national channel and $24,000 in BWS — again, same brand, same event, the pool more than doubling as the channel changes. The number that moves most between these isn’t the appeal of the prize. It’s the door count the prize sits behind. That’s the tell: when a brand runs the identical job at four-figure and five-figure pools at once, it isn’t because the five-figure one needed a bigger carrot to land — it’s because the bigger channel justified a bigger spend, and the channel is doing work the pool gets credited for.
What the research actually says — and what it doesn’t
The closest academic work is about prize count rather than pool value, and it’s worth being precise before borrowing it. Research in the Journal of the Academy of Marketing Science found consumers deciding whether to enter a sweepstake largely can’t evaluate whether the number of prizes on offer is good or bad when they see it in isolation. Within a normal range, more prizes didn’t make people feel their odds had improved, and didn’t make them more likely to enter.
The mechanism underneath that finding is non-evaluability: without a side-by-side reference, people can’t attach meaning to a magnitude, so they fall back on a rough “big or small” read and stop. That mechanism doesn’t care whether the magnitude is a count of prizes or a dollar value — both are numbers the shopper has no scale for at the shelf. A $50,000 pool and a $9,000 pool are each simply “a big prize you probably won’t win,” because from the aisle there is nothing to divide them against. The study measured count, but the cognitive limit it describes is the same one that flattens the difference between two pools — which is exactly why the Rule of Three only reads as “probable” when the odds are made legible against a reference, not just made larger. Making odds legible is a different job from making the pool bigger, and only one of them costs prize money.
Where the pool number stops being free
There’s a cost curve under the pool that’s easy to miss while the figure is being set. In New South Wales, a trade promotion authority is only required once the total value of all prizes exceeds $10,000. South Australia, the ACT and the Northern Territory set their thresholds lower again, so a pool that clears one state’s line has usually cleared several — and the paperwork, the fees and the lead time arrive with it. That’s the concrete form the non-linearity takes: appeal rises gently as the pool grows, but compliance cost steps up the moment the pool crosses a line. Crossing it is often right for a national campaign — it just ought to be a decision, not something you back into because a bigger number felt safer. The state detail sits in the Trevor Services guide to promotional permits in Australia.
What to spend on instead
Arguing the pool is weak is only half an argument; the other half is what’s stronger. Two levers cost no prize money. The first is how often someone can enter — allowing repeat entry keeps a shopper coming back and compounds participation without touching the budget. The second is venue: per Promo Monitor, Vinarchy’s BWS draw sits in a far larger door count than its on-premise version, and it carries the $50,000 pool while the on-premise one carries $9,000. The footprint difference between those two channels plausibly moves participation more than the pool difference does — which is the point. If distribution is doing the heavy lifting, the pool isn’t.
None of this argues for a mean promotion. There’s a floor, the Insult Threshold, below which a reward isn’t worth the effort of claiming — and shoppers find it fast. The useful question is the one rarely asked: if the pool were halved and the difference spent on entry frequency, distribution and believable odds, would the campaign do better or worse?
The case for raising the prize instead
The honest counter is that a bigger pool is the reliable lever — more money on the line, more people in. It’s not wrong that the pool is positive; the money isn’t doing nothing. The problem is the shape of the return. Appeal rises gently while the pool rises steeply, and past a state threshold the pool also drags permit cost and lead time up with it — so the last dollars added to the headline buy the least and cost the most. Whether a pool lifts sales at all is a separate question again — that needs units sold against a baseline or a matched-market test, which entry counts can’t give you. Entry counts are participation, not effectiveness; they can’t tell you a bigger pool sold more, only that more people entered, and usually not many more.
So hold the pool at the figure that clears the Insult Threshold and no higher, and put the budget delta where participation actually responds: repeat entry, more doors, and odds a shopper can read against something. That is the Monday-morning instruction — the pool is the dial you reach for last, not first.
If you’re rethinking how you set a promotion prize pool, we’d be happy to talk it through.
