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Built for Mars Ltd is a company registered in England and Wales (Company No. 12731987).

  • Case Studies
    UX Case Studies

    Impactful UX lessons and techniques, crafted into 86 digestible stories.

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  • Psychology
    UX Psychology

    Learn how to effectively use product psychology in your designs.

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UX analysis
Collections

Purchases & Subscriptions

BFM+Exclusive
8 min to learn...

How Airline Checkouts Make You Pay More for The Same Seat

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focused on
Hopper Logo
Kayak Logo
Google Logo
+3 more
Hopper logo
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Purchases & Subscriptions

Two people on the same flight, in identical seats, could pay dramatically different prices. Why? Because airlines use pricing strategies designed to upsell and confuse you at checkout.

Skills you'll build
  • How checkouts utilise strategic bundling to convert more

  • The value of certainty in design

  • Why you shouldn't trust "best value" tags

Case StudyFeb 20, 2025
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BFM+Exclusive
9 min to learn...

What Audible Gets Wrong About Repeat Purchases

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Audible Logo
Audible
Audible large logo
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Churn & Retention

How to create a flywheel of discovery, purchase and satisfaction that leads to repeat purchases.

Skills you'll build
  • Fix broken loops that hurt retention

  • Turning small product moments into buying momentum

  • Reduce friction in your checkout

Case StudyAug 15, 2024
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BFM+Exclusive
10 min to learn...

The Billion Dollar Missed Opportunity

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Zara Logo
Zara
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Purchases & Subscriptions

A borderline unusable experience, littered with bugs and full of missed opportunities.

Case StudyNov 23, 2023
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BFM+Exclusive
10 min to learn...

Optimising a Checkout for Impulse Purchases

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Hellofresh Logo
Hellofresh
Hellofresh large logo
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Product Psychology

Horrible retention rates, dark patterns and incentivising people to abandon their carts. This is HelloFresh.

Case StudyOct 10, 2023
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BFM+Exclusive
9 min to learn...

Using Dark Patterns to Overcharge for Pizza

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Dominos Logo
Dominos
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Product Psychology

How Dominos and Pizza Hut use UX tricks and design psychology to quietly charge more.

Case StudyApr 18, 2023
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BFM+Exclusive
12 min to learn...

A Masterclass In Pricing Psychology

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Netflix Logo
Netflix
Netflix logo large
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Product Psychology

How Netflix doubled sign-ups to their ad-tier with one simple design tweak.

Case StudyFeb 28, 2023
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BFM+Exclusive
6 min to learn...

Why 91% of Visitors Don't Purchase Tickets

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Delta Logo
Delta
Delta airlines
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Purchases & Subscriptions

Lousy mobile experiences are forcing consumers to use their desktops. But why is the UX so turbulent?

Case StudyJun 1, 2022
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BFM+Exclusive
6 min to learn...

Converting Readers into Paying Subscribers (or not)

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Wall Street Journal Logo
Wall Street Journal
WSJ logo
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Purchases & Subscriptions

Annoying paywalls, confusing plans with tempting introductory rates and a cancellation nightmare. Could paid journalism be better?

Case StudyMay 5, 2022
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BFM+Exclusive
5 min to learn...

This is Why GameStop's Online Store is a Leaky Bucket

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Gamestop
Gamestop logo
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Purchases & Subscriptions

This UX analysis covers common pitfalls of eCommerce. How do you make shopping online feel intuitive? This is how.

Case StudyJul 22, 2021
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