How to test willingness to pay

Why "would you use this?" is the wrong question

Usage questions measure politeness. Payment questions measure value. The only signals that matter are ones where the customer gives something up: money, a deposit, a signed letter of intent, or at minimum a specific price commitment.

The Van Westendorp four questions

Ask target customers four questions about the outcome you promise:

• At what price would this be so cheap you'd doubt its quality?
• At what price would it feel like a bargain?
• At what price would it start feeling expensive, but still worth considering?
• At what price would it be too expensive to consider?

The overlap between "bargain" and "expensive" is your acceptable price corridor. Price below it and you signal low quality; above it and you need exceptional proof.

Anchor against competitor pricing

Customers already have a reference price — what they pay competitors or the cost of the workaround. Map competitor price points and position deliberately: cheaper with a clear trade-off, or more expensive with a clear reason. "Same price, slightly better" is the weakest position in any market.

The strongest test: ask for money

A pre-sale, a deposit, or a paid pilot beats every survey. Even five real payments teach you more than five hundred survey responses. If people won't pay before the product exists, ask what would make them — the answer is your roadmap.

Putting it together

Marketproof's pricing lab runs this reasoning for your specific idea: it analyzes competitor price points, estimates a willingness-to-pay range, and suggests a launch price with the evidence attached — so pricing becomes a decision, not a guess.