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Advanced Surveys: Pricing & Feature Prioritization

Stop asking 'How much would you pay?' The 3 methods to get honest answers: MaxDiff, Conjoint, and Van Westendorp.

Marc Busch
Updated May 1, 2024
8 min read

Summary

Simple rating scales fail when measuring complex preferences. MaxDiff simplifies prioritization by forcing choices between subsets of features. Conjoint Analysis reveals how users make trade-offs between attributes and price. The Van Westendorp Price Sensitivity Meter identifies acceptable price ranges through four diagnostic questions. Each method answers a different strategic question.

"How much would you pay for this feature?"

This question produces unreliable data. Users do not know. They guess. They anchor on whatever number feels safe. And you make product decisions based on fiction.

Advanced survey methods solve this by forcing realistic choices instead of asking for direct answers.

Why Simple Questions Fail

Asking someone to rank a list of 20 items is cognitively difficult and often produces unreliable data. Simple rating scales are not enough when you need to understand complex user preferences or prioritize a long roadmap.

The Problem with Direct Questions

Question TypeProblemResult
"Rate these 20 features 1-5"Everything gets rated 4-5No differentiation
"Rank these 20 features"Cognitive overloadRandom ordering after top 5
"How much would you pay?"No context for comparisonAnchoring bias, guessing
"Is this feature important?"Social desirability biasEveryone says yes

Method 1: MaxDiff (Maximum Difference Scaling)

MaxDiff is a powerful method for prioritizing a long list of features. It simplifies the task by showing respondents small, manageable subsets of items and asking them to choose only the "most" and "least" important from each set.

How It Works

Instead of asking users to rate or rank 20 features, MaxDiff shows them sets of 4-5 features at a time:

MaxDiff Survey ExampleA MaxDiff survey interface showing four features — Dark mode, Offline access, Team collaboration, and Custom notifications — where respondents select Team collaboration as most important and Dark mode as least important.MOST IMPORTANTLEAST IMPORTANTDark modeOffline accessTeam collaborationCustom notifications

Each respondent sees multiple sets with different combinations. The analysis produces a clear, rank-ordered list of what your users value most.

When to Use It

Use CaseWhy MaxDiff Works
Feature prioritizationReveals true preferences across 10-30+ items
Roadmap planningCreates defensible priority rankings
Messaging testingIdentifies most compelling value propositions
Benefit prioritizationDetermines which benefits resonate most

The Output

MaxDiff produces:

  • A rank-ordered list from most to least important
  • Relative importance scores (how much more important is #1 vs #10?)
  • Segment-level analysis (do power users prioritize differently?)

Method 2: Conjoint Analysis

Conjoint Analysis is used to understand how people make trade-offs between different product attributes. It helps answer questions like: "How much more are customers willing to pay for a longer battery life versus a better camera?"

How It Works

Instead of asking directly about value, Conjoint presents users with a series of product concepts with different feature combinations and prices, forcing them to make realistic choices:

Conjoint Analysis ExampleA conjoint analysis choice task comparing two smartphone configurations: Option A with 8hr battery, 12MP camera, 64GB storage at €499 versus Option B with 12hr battery, 8MP camera, 128GB storage at €599. Option B is selected.Which would you choose?OPTION ABattery8 hrCamera12 MPStorage64 GBPrice€499ChooseOPTION BBattery12 hrCamera8 MPStorage128 GBPrice€599Chosen ✓

By analyzing patterns across many choices, the method reveals the hidden value users place on each individual attribute.

When to Use It

Use CaseWhy Conjoint Works
Pricing decisionsReveals willingness to pay for specific features
Feature trade-offsQuantifies how much users will sacrifice for X
Product configurationIdentifies optimal feature bundles
Competitive positioningCompares value of your attributes vs. competitors

The Output

Conjoint produces:

  • Part-worth utilities (value of each attribute level)
  • Price sensitivity curves
  • Optimal product configurations
  • Market simulation (predicted share at different price points)

Method 3: Van Westendorp Price Sensitivity Meter

The Van Westendorp Price Sensitivity Meter is a classic technique used specifically to gauge customer perceptions of value and identify an acceptable price range ("willingness to pay").

How It Works

The method asks four core questions:

QuestionLabelMeasures
"At what price would it be so expensive that you would not consider buying it?"Too ExpensiveUpper limit
"At what price would it be so low that you would doubt its quality?"Too CheapLower limit
"At what price is it starting to get expensive, but you would still consider it?"ExpensiveResistance point
"At what price would you consider it a great bargain?"BargainAttraction point

The Analysis

The analysis involves plotting the cumulative frequencies for each question:

Van Westendorp Price Sensitivity ChartA price sensitivity chart showing four curves — Too Cheap, Bargain, Too Expensive, and Expensive — plotted from €10 to €70. Intersection points mark the Optimal Price Point at approximately €35, Point of Marginal Cheapness at €24, and Point of Marginal Expensiveness at €50, defining the acceptable price range.100%75%50%25%0%€10€20€30€40€50€60€70Acceptable Price RangePMCPoint of MarginalCheapnessOPPOptimal Price PointPMEPoint of MarginalExpensivenessToo CheapBargainToo ExpensiveExpensiveToo CheapToo ExpensiveOPPBargainExpensivePMC / PMESolid = direct price perception · Dashed = relative value judgment

The intersection points reveal:

  • Optimal Price Point (OPP): Where "too cheap" and "too expensive" cross
  • Point of Marginal Cheapness (PMC): Lower bound of acceptable range
  • Point of Marginal Expensiveness (PME): Upper bound of acceptable range

When to Use It

Use CaseWhy Van Westendorp Works
New product pricingEstablishes acceptable range before launch
Price change evaluationTests sensitivity to increases/decreases
Market positioningCompares perceived value across segments
Competitive pricingBenchmarks your range against competitors

The Output

Van Westendorp produces:

  • Acceptable price range (floor to ceiling)
  • Optimal price point
  • Indifference price point
  • Segment-level price sensitivity

Choosing the Right Method

Question You Need to AnswerMethod
"Which features should we build first?"MaxDiff
"How do users trade off features vs. price?"Conjoint
"What price range will users accept?"Van Westendorp
"How much is Feature X worth to users?"Conjoint
"Which of these 25 benefits resonates most?"MaxDiff
"Are we priced too high or too low?"Van Westendorp

Combining Methods

For comprehensive pricing and feature strategy, combine methods:

Three-Phase Research ProcessA workflow diagram showing three sequential phases: Phase 1 MaxDiff to prioritize features, Phase 2 Van Westendorp to establish price range, and Phase 3 Conjoint to optimize feature-price bundles.PHASE 1MaxDiffPrioritize featuresWhat matters most?PHASE 2Van WestendorpEstablish price rangeWhat will users pay?PHASE 3ConjointOptimize bundlesWhich features at which price?

This sequence builds understanding progressively: first what users want, then what they will pay, then the optimal configuration.

Implementation Considerations

MethodSample SizeComplexityTools Required
MaxDiffn=100-200MediumSpecialized survey platform
Conjointn=200-500HighConjoint software, statistical expertise
Van Westendorpn=100+LowStandard survey + spreadsheet

What This Means for Practice

Stop asking users direct questions about preferences and pricing. Their answers are unreliable.

  1. Use MaxDiff for feature prioritization—it handles long lists that ratings cannot
  2. Use Conjoint for trade-off analysis—it reveals willingness to pay for specific attributes
  3. Use Van Westendorp for price range discovery—four questions identify the acceptable zone
  4. Combine methods for comprehensive pricing strategy
  5. Get expert help for Conjoint—the statistical complexity is real

The goal is not to ask users what they want. It is to observe what they choose when forced to make trade-offs.

READY TO TAKE ACTION?

Let's discuss how these insights can drive your business forward.

Advanced Surveys: Pricing & Feature Prioritization | Busch Labs | Busch Labs