Latest / The Pricing Marketing Podcast with Fexingo: Price Anchoring, Bundling, and Conversion Pricing / How a $4 Candy Bar at Checkout Explains Price Anchoring
Transcript
- Lucas: You're at the grocery store. You've got a cart with maybe 40 bucks worth of stuff — milk, eggs, bread, some chicken. You get to the checkout, and there's that rack of candy bars. You grab a KitKat. It's four dollars. And you don't even flinch. Luna: Right, because next to a forty-dollar total, four bucks feels like nothing. But that candy bar is ten percent of your spend. Lucas: Exactly. That's the anchor at work. The forty-dollar cart becomes the reference point. The candy bar is priced relative to that, not to its standalone value. And retailers know this cold. Luna: So the candy bar is actually a textbook example of price anchoring — but in the opposite direction from what we usually talk about. Normally, the anchor is the expensive thing that makes the cheaper option look good. Here, the anchor is the total bill, and the add-on looks tiny. Lucas: Marketers call this 'transaction decoupling.' It's a term from research by Dilip Soman, a marketing professor at the University of Toronto. He found that when you mentally separate a small purchase from a larger one, you're more likely to buy it. The candy bar isn't compared to other candy bars — it's compared to the forty dollars you've already committed to spending. Luna: So the brain treats it as a standalone decision, but the anchor is still the cart total. It's like the candy bar gets a free pass because it's just an add-on. Lucas: And retailers reinforce that decoupling physically. The candy bar isn't in the aisle with the other snacks. It's at the register, in a separate display, often with its own price tag. CVS and Walgreens are masters of this. You walk in to pick up a prescription — that's your anchor. Then there's a display of travel-size shampoos, energy drinks, and chocolate at the counter. Luna: I've definitely grabbed a five-dollar bag of trail mix at the CVS checkout when I went in for a two-dollar tube of toothpaste. The toothpaste became the anchor, and the trail mix felt like a rounding error. Lucas: That's the mechanism. The anchor isn't always the highest price — it's the first price you mentally commit to. Once you've agreed to spend something, the marginal cost of adding one more item feels lower. And companies use this everywhere, not just at the grocery store. Luna: Online, too. Amazon's 'Add an item for free shipping' prompt is the same idea. You've already decided to buy something for thirty dollars. They show you that you're five dollars away from free shipping. Suddenly a five-dollar add-on feels smart, not indulgent. Lucas: That's decoupling plus anchoring. The anchor is the original purchase. The add-on is framed as a way to save money — even though you're spending more. And the five-dollar item is usually something with a high margin: phone chargers, snack packs, whatever. Luna: Airlines do this too with baggage fees. You've already spent four hundred dollars on a ticket. Adding a checked bag for thirty-five dollars feels like nine percent extra. But if the ticket were listed at four hundred and thirty-five dollars with a bag included, you'd compare it to other airlines differently. Lucas: That's the genius of unbundling. You anchor on the base fare, then upsell everything else. And the same logic applies to the candy bar: the anchor isn't the retail price of the candy bar — it's the total you've already accepted. Luna: Let's talk about the actual numbers. A typical grocery store candy bar used to be around a dollar. Now some are three or four dollars. But the anchor effect hasn't weakened because grocery totals have also gone up. The ratio stays roughly the same. Lucas: That's a key point. The percentage markup matters more than the absolute price. If the average grocery trip is forty dollars, a four-dollar candy bar is ten percent. If the trip is sixty dollars, a six-dollar candy bar feels the same. Retailers are just scaling the add-on with the anchor. Luna: And they test this constantly. I read that some stores have raised candy bar prices at the register to four or five dollars, and sales barely dropped — because the anchor moved with overall inflation. Lucas: Let's zoom into one specific example. In 2023, a consumer watchdog group looked at checkout candy pricing at CVS and found that the average price for a standard-size KitKat was three dollars and forty-nine cents. The same bar at a regular aisle in a grocery store was two dollars. That's a seventy-five percent markup. Luna: And people still buy it. Because at the register, the alternative is nothing — not a cheaper candy bar. The anchor is the total bill, not the candy aisle. Lucas: That's the other piece: there's no comparison display at checkout. You don't see a shelf of candy bars with different prices. You see one impulse rack. The retailer controls the frame of reference completely. Luna: So what can a listener do with this? I mean, besides feeling slightly manipulated next time they're at the register. Lucas: Well, if you're a business owner, you can apply this in your own checkout flow. Whether it's an e-commerce site or a physical store, think about what the customer has already committed to spending. Then offer a low-ish add-on that's high-margin. The anchor is already set. Luna: And if you're a consumer? Just recognizing the anchor is half the battle. Next time you're at the register and that four-dollar candy bar looks reasonable, ask yourself: compared to what? Lucas: Exactly. The anchor is your own spending. And the candy bar is a ten percent tax on your trip that you didn't plan for. Which brings me to something I wanted to mention. If today's episode sparked a thought you've actually used — maybe you noticed the anchor at your own checkout, or you tried a decoupling strategy — you might find value in the conversations we have here every day. This show is ad-free, and listener support is a big part of that. If today was worth the price of a candy bar to you, there's a link: buy me a coffee dot com slash fexingo. Luna: Yeah, it's a small way to keep the conversation going without any sponsored interruptions. Really appreciate anyone who chips in. Lucas: Okay, back to the candy bar. There's another layer: the 'pain of paying.' Research by behavioral economist Dan Ariely shows that when you combine a small purchase with a large one, the pain of paying for the small item is diminished because the brain focuses on the larger transaction. Luna: So it's not just the anchor — it's also the timing. You're at the end of the transaction. You've already gone through the effort of shopping. The marginal pain of swiping your card for an extra four dollars is almost zero. Lucas: And that's why the candy bar rack is positioned after you've made all your other decisions. It's a final low-effort, high-impulse opportunity. The store doesn't want you to decide on the candy bar in the aisle — they want you to decide when your brain is already checked out. Luna: I've also seen this in online checkouts. Sites like Booking.com show you a 'room upgrade for just $20' after you've already entered your credit card info. Same mechanism. Lucas: Right. The anchor is the room price you've already accepted. The upgrade looks cheap by comparison, even if it's priced higher than what you'd pay if you booked it separately. And because it's added to the same transaction, the pain of paying is dampened. Luna: One more thing: there's a dark side. Some retailers have been criticized for making the checkout lane a gauntlet of high-margin impulse items, especially for people who are less price-sensitive — like parents with tired kids. Lucas: Yeah, and that ties into behavioral targeting. Stores know that if you're shopping at 6 PM with a toddler, you're more likely to grab a candy bar. The anchor effect is strongest when you're distracted or in a hurry. Luna: But the candy bar itself isn't the villain. It's a brilliant use of price anchoring and decoupling. Understanding it helps you both as a consumer and as a marketer. Lucas: And it's a perfect example of how the same psychological principle — anchoring — can work in multiple directions. Usually the anchor is the high price that makes something else look cheap. Here, the anchor is the low total that makes an add-on look like nothing. Luna: Next time I'm at the register and see a four-dollar snickers, I'm going to think of this conversation. And probably still buy it, but at least I'll know why. Lucas: That's the goal. Awareness doesn't mean you stop the behavior — it means you understand the trade-off. And sometimes a four-dollar candy bar is worth it. But now you know the anchor that made it feel that way.