A/B Testing CTAs for RHS Chelsea Flower Show: ‘Buy Now’ vs. Price

Project Title

Chelsea Ticketing Page CTAs: “£Price” vs. “Buy Now”

The Challenge

The goal was to increase engagement and conversions on the Chelsea ticket options page. The hypothesis was that replacing static price labels with a more action-oriented “Buy Now” CTA would drive more clicks and potentially increase ticket sales, though it might reduce clarity or affect secondary content engagement.

My Role

I led the experimentation strategy, designed the A/B test in Optimizely, defined success metrics, and analyzed the results. I also collaborated with design and content teams to implement the CTA variation and ensured proper tracking was in place.

Tools & Setup

Optimizely: A/B test setup and traffic split
GA4 / Contentsquare: Conversion and engagement tracking
Excel / Looker Studio: Data analysis and visualization

Tracking was implemented as events in Optimizely and as Goals in Contentsquare for CTA clicks, ticket purchases, and secondary content engagement.

What We Tested

We tested two CTA formats on the Chelsea ticketing page:
Original: CTAs displayed the ticket price (e.g., “£137.85”)
Variation: CTAs displayed “Buy Now” instead of the price

The test ran from 31 March to 30 April 2025 with a 50/50 traffic split across all visitors.

What I Found

Primary Metrics – Chelsea Tickets

Secondary Metrics – Other Categories


Both member and public ticket conversion uplifts were statistically significant at the 95% confidence level.

What I Learned

What worked well: Action-oriented CTAs like “Buy Now” significantly increased engagement and conversions for the primary goal.
What I’d do differently: Explore hybrid CTAs (e.g., “Buy Now – from £130”) to maintain urgency while preserving clarity.
Surprises: Malvern ticket sales unexpectedly rose by 114%, suggesting potential spillover interest.

📸 Visuals

RHS Chelsea Ticket Options page: clickRate

Click rate: Control on the left and Variation on the right

Feedback welcome.

I welcome your thoughts—whether it’s feedback on this test or ideas for future experiments, feel free to reach out.

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