3,000 miles or your money back | Nudge Newsletter


Money-Back Guarantees

Read online


I love this ad.

"If the soles wear out before 3,000 miles, we'll replace the shoes free."

Customers have become so used to false promises and unrealistic claims that a money-back guarantee like this really stands out.

But does it work?

The Evidence

In 2011, a paper published in the Journal of Retailing studied money-back guarantees¹.

200 consumers saw ads for eight different products.

Sometimes the product had a money-back guarantee, plus a guarantee logo. The control group saw the identical ad, without the guarantee.

Turns out, the money-back guarantee boosted the perception of the ad in almost every way.

Those who saw the money-back guarantee ad were:

  • 6.1% more likely to buy
  • 4% more favourable about the product
  • And 2.9% less likely to regret the purchase

A money-back guarantee reduces the perceived risk, makes people feel less pressured and makes them more likely to actually buy.

It worked for all product types, but even more strongly for products that are hard to evaluate until you buy them (like running shoes and fridges).

Which is why I offer a no-questions-asked 30-day money-back guarantee for the Nudge Vaults.


There are 575+ more insights like this in the Nudge Vaults

Everyone gets a 30-day money-back guarantee. I've had three customers request it. All received their money back the next day, with no questions.

Get access to the Vaults right now →

Or you can preview your first 50 insights for free


Cheers,

Phill

¹Suwelack, T., Hogreve, J., & Hoyer, W. D. (2011). Understanding money-back guarantees: Cognitive, affective, and behavioral outcomes. Journal of Retailing, 87(4), 462–478.

As a behavioural science practitioner, I believe in the peak-end rule.

Tune into Nudge | Advertise with Nudge | Unsubscribe

Nudge Newsletter

I spend 18 hours each week turning marketing psychology into readable newsletters.

Read more from Nudge Newsletter

Social Proof Read online Incredible marketing can be incredibly simple. In 2007, two Chinese researchers ran an experiment at 13 Beijing restaurants¹. Some diners were sat on tables with a plaque listing the most popular dishes. Others were sat at tables with no plaque. Did the plaque change what people choose? Diners who saw the most popular dish plaques were 18% more likely to order one of those dishes, even at a higher price. That's not all. Customers who ate a "most popular dish" rated it...

Labour Looks Smarter Read online Last week I shared one of my unhinged theories with you Many of you rightly pointed out that one study from 2011 is hardly enough to draw lofty conclusions. Fair enough, I've gathered some more evidence. Starting with an imaginary story from my barbers. A good barber is a slow barber Imagine you go to your local barbershop. Your normal barber is on holiday, so you're assigned to someone new. Typically your barber spends 45 minutes cutting your hair. He's not...

Labour Illusion Read online I have a slightly unhinged theory that most websites lie to me. I know you're reaching for the unsubscribe button, wondering how many tin foil hats I can fit on my massive hat, but wait. I have some evidence. In 2025, most of the major LLM models made an almost identical update. Claude, ChatGPT, Gemini and many others started to show what they were thinking. What Claude told me when I asked it if websites were lying to me. According to Claude, Anthropic does this...