Prior.Runprior.run·
Price Comparison Transparency TestExperiment 24
AWe prefer Design A·
Price Comparison Transparency TestExperiment 24
v1 · Apr 3, 2026 · 8:29 PMOptimizing for: Conversion
Decision Memo

We prefer Design A for conversion

Deal-seeking online shoppers — mix of comparison-shoppers and impulse buyers, primarily mobile

Persona template: E-commerce Shopper

Confidence

Close callIdentical dimension scores with only aesthetic differences breaking the tie

Readiness

Needs significant workCritical compliance and trust signal gaps must be addressed first

The bottom line

Both designs struggle with trust signals and compliance issues, but Design A's professional polish gives it a slight edge with deal-seekers. The cleaner aesthetic reduces credibility concerns that could prevent 47% of price-sensitive shoppers from converting. However, both designs need immediate trust signal improvements before launch.

51sto decisionvs.4–6 weeks to reach stat sig
1,800+synthetic users tested
Designs compared
Recommended
Design A
ADesign A
Design B
BDesign B
What our users said
Saw Design A60% of non-converters cited missing reviews and ratings as primary trust blocker.

I scrolled past the hero, tapped the reviews section — wait, there's nothing there. No ratings, no proof this actually works. That's an immediate dealbreaker for me.

Saw Design AAesthetic design + urgency messaging converted visual-first shoppers despite missing pricing.

The gradient and sparkles caught my eye, and honestly? Forty to ninety percent off flights sounds amazing. I'm saving this to explore when I actually plan a trip.

Saw Design BMissing cancellation terms and security badges blocked 70% of financially cautious users.

Free trial sounds great, but when does it charge me? What data are they grabbing? I've got a kid depending on me — I need specifics, not vague promises.

Notable dissent
Saw Design A50% of non-converters recognized vague discount language as deliberate obfuscation tactic.

Clean design, free trial, big savings promise — I'm curious. But where's the actual pricing breakdown? 'Up to 40-90% off' is a qualifier that screams hidden complexity.

Marketing professionals and detail-oriented users (12% of cohort) flagged aesthetic polish masking missing conversion mechanics.

Action item: add itemized pricing tiers and concrete ROI examples above the fold to satisfy skeptical evaluators.

Runner-up wins and misses

Why Design B lost, and what’s worth keeping.

How to improve

For your team — what to fix, what to keep, and what to verify.

Deeper analysis

For your VP, stakeholders, or anyone who wants the full picture.

Your feedback

Yes — shipping with confidence

Happy to hear it. Go ship it.

Generated by Prior.Run — Know before you build.