Another Look at Pricing Psychology Statistics

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Price is always going to be a controversial issue for retailers, so we really don't mind putting in new data whenever we come across it. Recent research shows that some of the most beloved of pricing strategies may be based on outdated pricing psychology. In other words, the magic is gone.

We have discussed at some length the seemingly infallible power of the number “9” in retail pricing in a recent blog post, so we won't go into that again. All you have to take away from that is that “9” has a mystical ability to make items seem cheaper than they really are. This is particularly true in the U.S., where tax isn't included on the listing price.

A USA Today article states that 90 percent of retail prices end in “9” or “5.” Add in the digit “0” and the total increases to 97 percent. However, the “5” and “0” were only thrown in to mix things up a bit. The truth is, anywhere you look online or offline, most of the price tags you see end in 9. Steve Jobs made millions for Apple by selling songs on iTunes for 99 cents.

However, 9 only works up to a certain point. Once your item sprints past the $500 mark, consumers will no longer be charmed into buying by simply ending it “9,” “5,” or “0”—that is, until you get to $900, at which point the spark briefly flares up until you get past the $1,000 mark. According to a Huffington Post article, only 25 percent of expensive homes had a list price ending in 9. But even at the 2-digit mark, the magic of 9 slowly fades away.

The $igns of the Times

A study performed by states that researchers at Cornell University found the inclusion or exclusion of the “$” sign before the price significantly affected the amount consumers spent at any one point (“$ or Dollars: Effects of Menu-price Formats on Restaurant Checks,” The Center for Hospitality Research, vol. 9 no. 8).

This explains how I'm always surprised when I get an à la carte meal from a fancy restaurant…

When customers at a café were presented with a menu with the usual “$” preceding the price, they spent X amount. When the “$” was eliminated, customers spent 8 percent more than X. Apparently, seeing the “$” sign triggered a pain-of-paying response. Customers perceived that the items for sale were more expensive than they actually are when preceded by the “$” sign.

Harvard Business School professor John T. Gourville went on the record in a New York Times article, saying that pricing success is all about the power of suggestion. There is a trend today where $5 (without the sign) appears to be replacing 99¢ as the new sweet spot, that price at which customers feel comfortable about paying without a second thought.

Rounded Numbers

A newer wrinkle in pricing psychology that affects the power of 9 is the use of numbers ending in 0, or rounded numbers. A report published in the Journal of Consumer Research (“This Number Just Feels Right: The Impact of Roundedness of Price Numbers on Product Evaluations”) indicates that consumers are now drawn to price tags with rounded numbers if they are making a purchase based on personal feelings.

Yes, that's right: feelings. For example, if you are buying a tablet for your child's enjoyment, you are more likely to buy one for $100 than if it was priced at $98.56. However, if you are buying the same tablet for office use (utility), you will be more likely to buy it at $98.56. Researchers believe that the five studies analysed in the report demonstrated the effect of the subjective experience on reason. In other words, people will make a purchase more often when the price “feels right.”

Does that sound a bit loony? Well, it's probably not any stranger than the persistent perception that an item priced at $4.99 is $4 rather than $5. The difference is in the shift in customer preference. If you're dealing in products that are likely to have an emotional value, e.g., stuffed toys, you could benefit from using rounded numbers rather than non-rounded prices. If you are selling office products, you can still stick to the tried-and-true “$4.99” model.

The report only confirms what the folks at were talking about more than a year ago. They referred to a pay-what-you-want download promotion launched by the developers of the puzzle video game “The World of Goo.” This promotion was put in place to celebrate the game's first anniversary. There were 65,000 purchases worldwide, with payments pouring into PayPal ranging from one cent to $150. What was really interesting for our purposes is that fully 61 percent of the buyers chose rounded numbers (57 percent whole numbers, 4 percent with amounts ending in 50 cents). This appears to indicate that more consumers prefer to pay rounded numbers. It certainly makes balancing a checkbook easier.

The authors of the study also looked at how consumers tipped when paying a restaurant using their credit cards. The 9,000 credit card slips studied yielded 73 percent that showed whole-dollar tip amounts, with about 8 percent rounded to the half-dollar. There was also an observed tendency to tip in multiples of $5.

In cases where the bill did not end in a round number, about 25 percent of customers made the effort to do the math so that they could leave a tip that would bring their total bill to a rounded number. Data from 1,301 different self-service gas stations yielded similar results. More than half of the sales (61 percent) were rounded numbers.


These studies into customers' price preferences that appear to contradict conventional wisdom may be attributable to the increased control that they have over where the meter stops. Self-service gas stations, credit card tips, and online commerce all turn the control over to the consumer, and the consumers are exerting it with a vengeance. Because rounded numbers are easier for the brain to process than non-rounded numbers, doing so just “feels” right.

Their preference for rounded numbers and elimination of currency signs may have been there all the time, but studying customer behavior has become much easier because the information is more easily obtained and analyzed.


It's clearly important for online retailers to know pricing psychology. Overall, the oldies are still the goodies, because people don't really change. In some aspects, however, conventional wisdom may have been just a little off when it comes to rounded numbers and the power of 9. Does this mean that we should totally nix our $9.99 offers? Not in all instances. It depends on the kind of products you are selling.

What matters is that we are constantly looking for updates that may affect how we do business, and pricing our products are service just right is an essential factor in e-commerce success. However, consider just nixing the “$” signs and see what happens.

Have you engaged in any experimental pricing strategies? What were the results? Let us know in the comments.

About the author
Zack Rutherford

Zack Rutherford is a freelance copywriter. A combat sports enthusiast and poetic soul, he endeavors to create beauty through syntax, sentence structure, and the liberal use of hyperbole.

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  • Larry 14th of August
    I am thinking of a on line store and this info is very useful.
    I have considered a eBay store and am presently looking at
    Shopify, now Saleshoo is in the mix. My big hurdle is what
    to promote and how to promote it. If I can get this in my head
    I will proceed.

    Thanks for the info here,
    • Melissa Johnson SaleHoo Admin 14th of August
      Hi, Larry!

      We have a LOT of resources for learning how to sell on eBay as well as setting up your own store. You can find them here:

      If you need ideas for hot products to sell, we have the Salehoo Market Research Lab, which will give you the stats on whatever product you can dream up:

      I hope this helps. Good luck!