D · Offer & pricingExternally proven

Willingness to Pay (Van Westendorp)

A survey method with four price questions, too cheap, a bargain, getting expensive, too expensive. That yields an acceptable price corridor per customer segment. Pricing becomes a data-driven decision instead of gut feel.

When you need this method

Your prices grew historically or track the competition, no one knows what customers would actually be willing to pay. Pricing discussions end in opinions instead of data. The risk is real in both directions: prices set too low give away margin, prices set too high lock out segments without anyone noticing.

Approach

  1. 1Survey a sample of real target customers per segment, with the four Van Westendorp questions: at what price would the product seem suspiciously cheap? A good deal? Expensive but conceivable? Too expensive?
  2. 2Overlay the response curves; the intersections mark the acceptable price corridor and the indifference point.
  3. 3Evaluate results separately per segment and persona, willingness to pay often differs substantially.
  4. 4Use the corridor as a starting point and cross-check it against real buying decisions (win/loss, discount pressure).

Typical application

A typical case: a B2B SaaS company plans a new product line and does not want to set the entry price "by feel" again. The team surveys a manageable number of target customers from two segments with the four price questions. The analysis shows the larger segment accepts a markedly higher corridor than assumed internally and that the originally planned price would have sat close to the "suspiciously cheap" threshold. The launch price is set in the upper part of the corridor and validated through the first deals.

Limits and counter-indications

Stated willingness to pay is not identical to actual buying behavior, the method yields a corridor, not a price tag. Small or biased samples (only existing customers, only fans) make the curves worthless. In complex enterprise deals with negotiation dynamics and procurement processes, it is one input among several.

How to measure impact

The identified price corridor per segment and its reconciliation with real deals: win rate and discount rate at prices inside versus outside the corridor.

Related methods

Sources

  1. 1.NSS Price Sensitivity Meter (PSM), Peter H. van Westendorp, ESOMAR-Kongress 1976 · ESOMAR · 1976 · academic and scholarly literature · describes the methodThe original paper in which van Westendorp introduces the four price questions and their analysis. Accessible only through the ESOMAR congress archive, hence without a link; the full reference is documented in the package documentation below.
  2. 2.Van Westendorp Pricing Model: Definition, How It Works, Examples (opens in a new tab) · Sawtooth Software · n.d. · practitioner source · describes the methodReproduces the four questions verbatim, explains the four intersections and the accepted price range, and at the same time names the methodological criticism of relying on curve intersections alone.
  3. 3.pricesensitivitymeter: Van Westendorp Price Sensitivity Meter Analysis (Paketdokumentation) (opens in a new tab) · CRAN, The Comprehensive R Archive Network (Max Alletsee) · 2026 · practitioner source · describes the methodCarries the complete original reference van Westendorp 1976, ESOMAR congress, pages 139 to 167, and describes the calculation of the accepted price range from the four questions.

Origin: van Westendorp · Adapted from: Patrick Campbell (ProfitWell/Paddle)

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