


Van Westendorp, also known as the Price Sensitivity Meter, is a survey method that uses four price questions to determine which price range a target group considers acceptable for an offer, from too cheap to too expensive.
The method goes back to the Dutch economist Peter van Westendorp, who presented it at the ESOMAR Congress in 1976. It remains one of the most widely used tools in pricing research.
Respondents see a product and answer four questions: At what price would it be so cheap that you would doubt its quality? At what price would it be a bargain? At what price would it be expensive, but you would still consider it? At what price would it be so expensive that you would no longer buy it?
The cumulative answers produce four curves. Their intersections give an accepted price range as well as reference points such as the optimal price and the indifference price. A common extension also asks about purchase likelihood in order to estimate rough demand and revenue curves (Newton, Miller & Smith 1993).
Van Westendorp is fast, inexpensive and easy to explain. The method narrows down early the range within which a price should be discussed at all, and shows the point at which a price triggers doubts about quality. That is useful in the early phase and for categories without a clear reference price.
For the final pricing decision it is rarely enough. The method delivers assessments, not demand per price. It says which prices are considered acceptable, not how many people actually take up the offer at which price. Stated willingness to pay is on average higher than real willingness to pay (Schmidt & Bijmolt 2020).
For a new current account with additional services, a Van Westendorp survey yields an accepted range of €4 to €9 per month. This narrows down the behavioural test: €4.90, €6.90 and €8.90 are tested.
The test shows that measured sign-up intent at €6.90 is barely lower than at €4.90, but drops clearly at €8.90, even though this price was still considered acceptable in the survey.
Gabor-Granger asks about willingness to buy at specific price points and thus delivers a stated demand curve. Van Westendorp delivers a range without volume. Conjoint analysis derives price acceptance from choices between product profiles.
A behavioural test measures purchase intent per price. The two approaches complement each other: Van Westendorp narrows the range, and the behavioural test compares the prices that are ultimately up for choice.
The answers depend heavily on known reference prices. For genuinely new offers this reference is missing, and the range then often becomes very wide. Respondents do not see a concrete price in a buying situation or any alternatives; they name numbers. The intersections are conventions, not measured optima.
A behavioural test has limitations too: it only checks the price points tested and is not suited to products that are chosen on the shelf next to competitors.
Van Westendorp 1976: Origin of the method: four price questions whose cumulative answers are used to derive an accepted price range. NSS-Price Sensitivity Meter (PSM): A new approach to study consumer perception of price, Proceedings of the ESOMAR Congress. Source
Schmidt & Bijmolt 2020: 77 studies, 115 effect sizes: hypothetical willingness to pay is on average 21% higher than real willingness to pay. Indirect methods overestimate more than direct ones, within-subject designs more than between-subject designs, higher-value products more than inexpensive ones. Accurately measuring willingness to pay for consumer goods: a meta-analysis of the hypothetical bias, Journal of the Academy of Marketing Science 48(3). Source
That depends on the target group and the accuracy required. Because each person names four prices, the method works with comparatively small samples.
It is a reference point based on assessments. How many people take up the offer at this price is only shown by a test of behaviour or by market data.
No. It is well suited as a quick way to narrow things down in the early phase. For the final decision it should not stand alone.
Bring your range, and we will outline a possible test design for the final prices.
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