Psychological pricing: what holds up and what looks cheap

Psychological pricing means choosing and presenting a price so it works with how people read numbers, without changing what the product is worth. The familiar examples of psychological pricing are $9.99 instead of $10, a high anchor shown first, a decoy plan nobody should pick, and a fee split off from the headline price. Some have solid evidence with consumers, one is much weaker than its reputation, and in B2B most of them survive only in a quieter form: precise, reasoned numbers the buyer can explain to their boss.

This post covers how to present a price once you have one; for choosing the model itself, start with pricing strategy.

1. Charm pricing works because people read the left digit first

Charm pricing is ending a price in 9 or 99. In five experiments published in 2005 as "Penny Wise and Pound Foolish", Manoj Thomas and Vicki Morwitz found a nine-ending price looks smaller than a price one cent higher only when the leftmost digit changes. The effect showed up with numbers that were not prices, too.

So $2.99 against $3.00 works, because the three becomes a two, as the ScienceDaily summary of the study puts it. By the same rule, $3.49 against $3.50 should do little, because both still start with three. (The cents column is not where the magic lives.)

Eric Anderson and Duncan Simester ran three field experiments and found that a $9 price ending raised demand in all three. The lift was larger for new items than for ones customers had seen before, which led the authors to suggest $9 endings work best when customers have little other information about the price.

2. Professional buyers pay for the left digit because their customers do

The best evidence that left-digit bias reaches business buyers is from used cars. Nicola Lacetera, Devin Pope and Justin Sydnor studied more than 22 million wholesale used-car sales, where the buyers are dealers. Prices drop at every 10,000-mile odometer mark, by about $150 to $200 between 10,000 and 100,000 miles.

Cars with 79,900 to 79,999 miles sold for roughly $210 more than cars with 80,000 to 80,100 miles, but only about $10 less than cars with 79,800 to 79,899 miles, according to the NBER summary. The authors find the pattern most consistent with partial inattention by the final customers. The dealers are pricing in how their own customers will read the odometer.

That is the B2B lesson. The procurement manager signing your contract will not mistake $9,999 for much less than $10,000. But if your customer resells your product, or their end users see a price you set, the left digit matters to those people, and your customer will pay for it.

3. Anchors move what people say they would pay, even random ones

An anchor is the first number a buyer sees, and later judgments drift toward it. In a 2003 study by Dan Ariely, George Loewenstein and Drazen Prelec, 55 MBA students first said whether they would buy products such as wine and a cordless keyboard for a price equal to the last two digits of their social security number, then stated the most they would pay. Students with above-median numbers stated values 57 to 107 percent higher.

The top fifth of numbers would pay $56 on average for the keyboard; the bottom fifth, $16. Nobody chose those digits, which is the unsettling part.

Two things follow. On a pricing page or in a proposal, show the larger number first: the plan for big teams, or the cost of the problem you solve. In research, never mention a price before asking buyers what they pay today; the Van Westendorp price sensitivity meter post covers how question order skews price surveys.

4. The decoy effect is weaker than its famous magazine example suggests

The decoy effect says adding a clearly worse option pushes people toward the option it most resembles. The famous example is a magazine subscription: web only, print only, or print plus web, with print only and print plus web at the same $125. Shane Frederick, Leonard Lee and Ernest Baskin report that Ariely cites an MBA class result where the decoy raised the share choosing print plus web from 32% to 84%.

They tried to replicate it. The original classroom version, by Kivetz, Netzer and Srinivasan, used groups of 29 and 30 MBA students. With 2,003 respondents on Google Surveys and the same options, the replication found 25% chose print plus web without the decoy and 21% with it, while 18% picked the "decoy" itself.

Across 38 studies, they found attraction effects mostly when every attribute was an abstract number. In the 27 studies where people could see, taste or touch at least one attribute, there was no significant attraction effect, and the authors question its practical significance.

Do not build a fake plan into your pricing. Build each tier around a real group of buyers; tiered pricing covers how.

5. Splitting a price lowers the total people remember, until they feel tricked

Partitioned pricing splits one price into a base price plus required fees: shipping, setup, a platform fee. Research by Vicki Morwitz, Eric Greenleaf and Eric Johnson found that 12.2% to 35.6% of consumers ignored the surcharge completely when recalling the total, according to a 2015 review of partitioned pricing research by the same group with Edith Shalev.

The same review notes the cost: attitudes toward the brand fell further when people blamed the seller for their recall mistake, and people may avoid retailers whose pricing they see as unfair. Regulators have noticed too. The FTC's rule on unfair or deceptive fees, effective May 12, 2025, requires live-event ticket and short-term lodging sellers to show the total price clearly and prominently, according to the GAO's summary.

In B2B, the hidden fee gets found, usually by finance, usually in the week you wanted to close. Itemize setup and add-ons if they are real choices, and put the year-one total on the quote.

6. Round prices suit list prices; precise numbers suit negotiated quotes

Wadhwa and Zhang's five studies found rounded prices such as $200.00 nudge buyers toward feelings and precise ones such as $198.76 toward reasoning, and that a match between price format and the kind of decision makes the choice feel right.

Negotiation research adds a reason to quote precise numbers. In a study by Malia Mason and colleagues at Columbia, 280 online participants adjusted their counteroffer by $9.54 on average against a round $20 opening offer, and by $8.17 against offers of $19 or $21. People assumed precise offers came from someone better informed, though the authors warn that overly precise offers might signal inflexibility or look like a manipulative gambit.

So publish round list prices, which read as clean and confident on a pricing page. When you send a custom quote, build it from the buyer's own numbers and show the math: 120 seats at $390 is $46,800. The figure looks calculated because it is.

What holds up in B2B and what looks cheap there

The right-hand column is our judgment from the research above, not a measured result. A larger B2B purchase is often checked by someone other than the person who chose it, and that person has a spreadsheet.

Test psychological pricing with buyers instead of trusting the trick

Here is a made-up example. Priya sells staff compliance software to dental groups at $39 per seat per month. A typical group has 25 seats, which is $975 a month or $11,700 a year, plus a $2,500 onboarding fee, for a year-one total of $14,200.

She is weighing $39 versus $40, an "Enterprise" tier as a decoy, and folding onboarding into the seat price. She asks eight practice managers three things:

1. Who else sees this price before it is approved, and what do they compare it to?
2. Here is a quote. What will year one cost you?
3. Which plan would you pick, and what would you say to your owner about why?

If several managers answer question 2 with $11,700, the split fee is hiding $2,500 that the owner will find later. If nobody mentions the Enterprise tier when explaining their pick, it is doing nothing. The $39 versus $40 question only matters if a manager says the price goes on a card with a limit, so let that answer decide it.

Interviews tell you how buyers read a price, not how many will pay it; pricing research covers which method answers which question.

Your next step

Write down the one pricing tactic you are tempted to try, then ask five buyers to explain your quote back to you. Instant Expert finds people matching a description, such as "practice managers at dental groups who approve software purchases," sends them paid invitations for a short call or a written or voice answer, and you pay only if someone books or answers. For help with the pricing design itself, browse the pricing strategy consultants and B2B pricing management experts directory pages.