Why Free Advice Is Not Always the Best Advice

"Can I pick your brain?"

Most of us say yes. A quick coffee turns into an hour. A "two-minute question" on WhatsApp turns into a voice note essay. You share what took you years to learn, they say "this is so helpful, thank you!", and you both mean it.

And then, quite often, nothing happens.

The website doesn't get fixed. The business plan stays in a drawer. The training plan lasts a week. Not because your advice was bad, but because there's something odd about advice that costs nothing. The research suggests we tend to value what's free less, and commit to it less.

Paying makes us show up

In 1985, psychologists Hal Arkes and Catherine Blumer, publishing in Organizational Behavior and Human Decision Processes, ran a simple experiment with theatre season tickets at Ohio University. Buyers were randomly given either the full price, a small discount or a big discount on the same season ticket.

The people who paid full price went to more performances in the first half of the season than those who got discounts. Having paid more, they made more effort to get their money's worth.

Psychologists call this the "sunk cost effect", and it's usually described as a mistake: we keep going with something just because we've already paid for it. But when the thing you've paid for is good advice, that same instinct works in your favour. Having invested, you're more likely to prepare, turn up and follow through. (Interestingly, the effect faded later in the season, which is a nice reminder that the commitment works best close to the moment of paying, like a session booked for next Thursday.)

The people who pay are the people who finish

When Harvard and MIT researchers looked back at six years of their free online courses, published in Science in 2019, one number stood out. In 2017–18, just 3% of all learners finished the course they'd signed up for. But among learners who had paid for a certificate, 46% finished.

To be clear, that doesn't prove paying made them finish. People willing to pay were probably more committed to begin with. But that's exactly the point. A price quietly sorts the "might get round to it" from the "I'm doing this". When someone pays for your time, you're far more likely to be talking to the second kind.

Price changes how we experience things

In a 2008 study published in the Proceedings of the National Academy of Sciences, researchers at Stanford and Caltech asked volunteers to taste a series of wines while their brains were scanned. The catch: some of the wines were the same wine, shown with different price tags. One was presented once at $5 and once at $45. Another at $10 and at $90.

People said the "expensive" versions tasted better. And it wasn't just politeness: activity in the part of the brain linked to pleasure went up when they believed the wine cost more.

It was a small study, and advice isn't wine. But it shows how strongly perceived value shapes our experience. When something feels valuable, we engage with it as if it is.

Putting money on the line changes behaviour

A 2010 study in the American Economic Journal: Applied Economics tested this in real life. Smokers in the Philippines were offered a savings account where they deposited their own money, which they'd lose if they failed a nicotine test six months later.

Those offered the account were 3 to 6 percentage points more likely to pass the test at six months than a comparison group, and they were still ahead a year on. It's a modest effect, but a real one, for one of the hardest habits there is to break. Having something at stake helped people follow through.

To be fair: paying isn't magic

It would be easy to conclude that charging always makes things better. It doesn't.

In a 1984 study in the Journal of Consulting and Clinical Psychology, students who wanted a therapy session were randomly told either to pay a fee or not. Paying didn't make the session work better. In fact, those who hadn't paid reported lower distress afterwards. The researchers suggested that paying may have raised people's expectations.

So price doesn't make advice itself any better. Where it helps is commitment: who turns up, who's serious, and who follows through. That matters most with things that need effort after the conversation is over: changing a habit, acting on a plan, doing the work. And that's exactly what most advice asks of us. (It's also a good reason to be clear upfront about what a session will and won't cover, so expectations match.)

There's also always room for free help: mentoring someone starting out, helping a friend, giving back. The point isn't that you should never give advice for free. It's that you should get to choose.

If you're the one being asked

Charging for your time isn't greedy. Done kindly, it helps everyone:

• It filters for people who are serious. The people who book are the ones ready to act.
• They come prepared. When someone's paid for 30 minutes, they arrive with real questions, not "so, um, where do I start?"
• They're more likely to follow through, which is what you wanted for them in the first place.
• You stop feeling quietly resentful about the fifth "quick chat" this month.

And you don't need an awkward conversation to get there. Next time someone asks, you can simply say: "Of course! I've got a page for that. Grab a slot and we'll get into it."

If you're the one asking

Paying for someone's time is an investment in yourself, and the research suggests you'll get more out of it. Before your session:

• Write down the one or two things you most want to solve.
• Share any background in advance, like your website, your numbers or your plan.
• Block time afterwards to act on what you learn while it's fresh.

Start small

You don't need consultant rates or a website to start. Pick a price that feels comfortable, offer a 30-minute session, and keep free chats for the people closest to you if you like. You can always change it later.

Your know-how took years to build. It's worth something to you, and, as it turns out, it's worth more to the person asking when they've paid for it too.

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References

1. Arkes, H. R., & Blumer, C. (1985). The psychology of sunk cost. Organizational Behavior and Human Decision Processes, 35(1), 124–140.
2. Plassmann, H., O'Doherty, J., Shiv, B., & Rangel, A. (2008). Marketing actions can modulate neural representations of experienced pleasantness. Proceedings of the National Academy of Sciences, 105(3), 1050–1054. https://www.sciencedaily.com/releases/2008/01/080126101053.htm
3. Reich, J., & Ruipérez-Valiente, J. A. (2019). The MOOC pivot. Science, 363(6423), 130–131. https://tsl.mit.edu/research/the-mooc-pivot/
4. Giné, X., Karlan, D., & Zinman, J. (2010). Put your money where your butt is: A commitment contract for smoking cessation. American Economic Journal: Applied Economics, 2(4), 213–235. https://www.povertyactionlab.org/print/pdf/node/1468
5. Yoken, C., & Berman, J. S. (1984). Does paying a fee for psychotherapy alter the effectiveness of treatment? Journal of Consulting and Clinical Psychology, 52(2), 254–260. https://digitalcommons.memphis.edu/facpubs/7762/