The research, plainly
Shampanier, Mazar, and Ariely offered chocolates at tiny prices versus free — and watched demand behave discontinuously. Dropping from one cent to zero flipped choices far more than any equal price cut elsewhere: zero is a special number that switches off cost-benefit math.
The receipt: Shampanier, Mazar & Ariely, 2007
What it means for events
One genuinely free, no-catch thing opens doors a discount never will — but 'free' must actually be free. The gated, form-heavy 'free' asset isn't free; it costs contact details and trust. Keep one gift truly unconditional and let zero do its strange work.
Where to run it
Content strategy
The ungated flagship tool or report — genuinely free — earns the goodwill the gated version spends.
Event offers
Free workshop seat with the pass beats an equivalent discount on the pass. Zero on something outsells less on everything.
Booth & activation
The genuinely useful free thing (assessment, tool, custom output) beats logo merchandise on every metric that matters.
Seen in the wild
Related concepts
Now use it
Score your own event against principles like this one — or make the whole vocabulary official.
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