In 2025, marketing teams juggle dozens of channels: programmatic ads, influencers, organic content, virtual events, email campaigns. In all that noise, one channel consistently delivers the highest purchase intent conversion rate, and it's the oldest one: letting people taste, touch, smell, or try your product in person.
73% of consumers say they're more likely to purchase a product after trying it. This figure from the EventTrack study holds across campaigns, brands, and categories.
Sampling vs. other channels: what the data actually says
The comparison on purchase intent lift is stark:
| Channel | Purchase intent lift | |---|---| | In-person sampling | 50 to 80% | | Influencer post | 20 to 30% | | Display / banner ads | ~0% |
Source: Gems Sampling, Sopost, Beefinity Agency (2024)
Digital advertising is effective for awareness and retargeting. It doesn't replace the physical experience for categories where taste, texture, smell, or product experience drives the purchase decision.
Case studies that speak for themselves
Olly's Savoury Snacks: 76% purchase intent post-trial, +66% sales lift in supported stores, best individual store: ×11.6.
Sanpellegrino: 42% of sample recipients purchased within two weeks. 88% submitted a 5-star review spontaneously.
PepsiCo: despite being an established brand, a campus sampling campaign generated +22% sales lift.
Hellmann's Vegan Mayo: 36% of people who received a sample made a purchase within two weeks.
The halo effect: the bonus few brands anticipate
Rhythm 108 (vegan products) ran a campaign focused on a specific range. Results: 60% purchase intent post-sample, and +20% lift across the entire range, including products that weren't sampled.
When a consumer has a good experience with one product from a brand, their perception of the whole brand improves. It's a reproducible result, not an exception.
The aggregate ROI
Average 70% marketing opt-in rate during well-executed sampling campaigns, making it a database-building tool as well. Average 3.2x ROI for retail sampling partnerships (Sopost, 2024). One multinational brewer recorded 34% purchase intent lift and 56% actual conversion from an event sampling campaign.
What makes the difference: the staff
These numbers apply to well-executed campaigns. The most determinative variable in execution is the quality of the sampling staff.
A demonstrator who engages in a real conversation, adapts to each person's profile, manages timing to avoid crowding the station, and knows when to let someone go without pressure generates qualitative insights that no click report can capture.
Sources: Gems Sampling, Sopost, EventTrack via Tecna, Beefinity Agency (2024)