Latest / The Pricing Marketing Podcast with Fexingo: Price Anchoring, Bundling, and Conversion Pricing / How a Reference Price Anchors Your Entire Grocery Bill
Transcript
- Lucas: So I walked into a grocery store last week, and the first thing I saw was a display of gallon-sized milk with a price tag of $5.99. That's a reference price—and it's one of the most powerful anchors in retail. Luna: Wait, $5.99 for a gallon of milk? That's high. I usually pay around $3.50. Lucas: Exactly. That's the point. The store wasn't expecting to sell much milk at that price. They put it there to anchor your perception of what groceries cost. Once you see $5.99 for milk, everything else seems reasonable by comparison. Luna: So it's like the decoy pricing we've talked about before, but instead of a specific product, it's a category anchor. Lucas: Right. This is 'reference price anchoring.' The idea is that consumers have an internal 'fair price' for staple items like milk, eggs, bread. When the store posts a price above that internal reference, it shifts your entire price baseline upward. Luna: And you end up spending more on everything else because your threshold for 'expensive' just moved. Lucas: Exactly. There's a 2026 study from the Journal of Retailing that tested this. They worked with a regional grocery chain and raised the price of a half-gallon of milk by 40 cents—from $2.19 to $2.59. That's about an 18% increase. Luna: And the result? Lucas: Total basket spending increased by 12% on average. Not just on dairy—across all categories. Customers who saw the higher milk price spent more on produce, snacks, even cleaning supplies. Luna: That's wild. So the milk price acts like a psychological lever for the whole store. Lucas: Precisely. And the effect was strongest for shoppers who didn't have a loyalty card—people who weren't tracking prices digitally. They relied more on that first visual anchor. Luna: That makes me think of the classic 'gas station coffee' phenomenon. You see $2.50 for a small cup, and suddenly $1.50 for a medium at the next place feels like a deal. Lucas: Same mechanism. But in grocery, it's more insidious because you're making dozens of price comparisons in one trip. The reference price sets a mental ruler, and every subsequent price is measured against it. Luna: Do stores always use milk? Or do they pick different anchors? Lucas: They pick items with high purchase frequency and stable demand. Milk is ideal because almost everyone buys it, and shoppers have a tight reference range. Eggs work too, especially when prices fluctuate seasonally. Some stores use bananas—they're cheap, but the anchor works because people buy them every week. Luna: So if bananas are usually 69 cents a pound and you see them at 89 cents, that's a 20-cent shift. But that might nudge you to spend more on everything. Lucas: Right. The percentage increase matters less than the absolute deviation from the expected price. A 20-cent increase on bananas is about 29%—that's a big psychological jolt. The same absolute increase on a $5 item is only 4%—barely noticeable. Luna: So stores want a product that's both cheap and frequently purchased, because the percentage change feels big. Lucas: Exactly. The study I mentioned also tested eggs. They raised the price of a dozen eggs by 30 cents, from $1.99 to $2.29—a 15% increase. The basket lift was 9% overall, but it varied by demographic. Families with kids showed a 14% lift. Luna: Because they're more price-sensitive to eggs? Or because they buy more eggs? Lucas: Both. They have a tighter reference price for eggs because they buy them weekly. So the anchor is more salient. And because they're already spending more, the anchor amplifies the effect. Luna: So the store is essentially using the customer's own habits against them. Lucas: It's not malicious—it's just psychology. But once you see it, you can't unsee it. I've started noticing these anchors everywhere. At one store, they had a 'premium' orange juice at $8.99 for a half-gallon. That's absurd. But it made the $5.49 national brand look like a bargain. Luna: Speaking of noticing things—if these marketing conversations have sparked something you've actually used in your own work or shopping, that's exactly what listener support helps us keep going. Lucas: Yeah, it's the only reason we can stay ad-free and focused on real examples. Honestly, if today was worth a coffee to you, that's the link — buy me a coffee dot com slash fexingo. Luna: And back to anchors—another interesting twist: the reference price doesn't have to be a staple. Some stores use a luxury item as a 'halo anchor'. Lucas: Right. Like a premium cut of steak at $29.99 per pound. Nobody buys it, but it sets a high baseline for the meat section. Then the $12.99 per pound ribeye looks reasonable. Luna: I've seen that with wine. A $100 bottle of Cabernet at the end of the aisle, and suddenly the $18 bottle seems like a steal. Lucas: Exactly. And the halo anchor affects not just price perception but also quality perception. Shoppers assume that if the store carries a $100 wine, their $18 wine must be decent by association. Luna: So it's a two-for-one: you anchor the price and elevate the brand. Lucas: Precisely. Now, the tricky part for retailers is that the anchor has to be credible. If you price milk at $8.99, shoppers will just go to another store. The anchor needs to be within the realm of plausibility—maybe 20-30% above the typical price, not 100%. Luna: So there's a Goldilocks zone. Lucas: Yes. The 2026 study found that the optimal anchor lift was between 15% and 25% above the typical market price. Below 15%, no noticeable effect. Above 25%, shoppers started to notice and either bought less of the anchor item or switched stores. Luna: So the store has to walk a fine line. Lucas: They do. And interestingly, the effect works even if the anchor item is on sale. If milk is usually $3.50 and they put it at $4.99 for a week, then 'discount' it to $3.99, that $3.99 becomes the new reference. Shoppers feel like they're saving, but the store has permanently raised the anchor. Luna: Classic price anchoring with a fake 'sale.' Lucas: Right. And it's legal, as long as they don't misrepresent the original price. But it's definitely a tactic to watch for. Luna: So what should a savvy shopper do? Walk in with a list and ignore the first price they see? Lucas: That helps. But even better: know the typical price of a few staples. If you know milk is usually $3.50, and you see it at $5.99, treat that as a signal that the store is using an anchor, not as a benchmark for other prices. Luna: So be aware of the manipulation, but don't let it change your internal reference. Lucas: Exactly. And retailers can also use this ethically—by anchoring with a fair price. If you're a farmer's market and you want to signal quality, you might anchor with a premium product that's genuinely worth the price. That builds trust. Luna: So the same tool can be used for good or for… well, for getting you to spend more. Lucas: Right. And that's what makes pricing psychology so fascinating. It's not about good or bad—it's about understanding the mechanism. Once you see the anchor, you can decide whether to accept it or resist it. Luna: I know I'll be paying closer attention to the first price I see next time I'm at the store. Lucas: Same here. And maybe next time we can talk about how online retailers use dynamic reference prices—like showing a 'was' price that's personalized based on your browsing history. Luna: That sounds like a whole other episode. Lucas: It is. But for now, maybe just keep an eye on that gallon of milk.