How to test willingness to pay, before writing code

Of all the validation steps, pricing is the one founders skip most — and it's the one that most often ends startups that "validated" everything else. The reason is simple and brutal: people will enthusiastically tell you they love an idea and then never spend a dollar on it. Interest is cheap; willingness to pay is the real signal.

The gold-standard signal

The strongest validation you can get isn't a survey result or a sign-up. It's a person, unprompted, asking "how much does it cost, and when can I buy it?" That question means they've mentally moved from "interesting" to "I have budget for this." When you hear it from strangers in your target market — not friends — pay attention.

Methods that work before you build

• Pricing-page smoke test. Put up a landing page with real prices and a "Buy" or "Start trial" button. Measure how many people click through to the point of payment. Clicks on a priced button are worth a hundred survey "yes"es.
• Pre-orders or deposits. Ask for a small refundable deposit or a pre-order. Money changing hands — even a little, even refundable — is the clearest behavioral commitment there is.
• The direct ask in interviews. After a customer describes their pain, ask what they currently spend solving it and what they'd pay for a better answer. Anchor to their current spend; it's far more honest than a hypothetical.
• Price-point A/B. Show different prices to different visitors and watch where conversion holds. This also surfaces whether you're underpricing — a common mistake that leaves money and signal on the table.

Read soft commitments, not just words

Short of payment, look for any commitment that costs the person something: booking a follow-up call, joining a private beta with a real time investment, introducing you to a colleague. People don't spend their time, reputation, or money on things they don't actually want. A verbal "I'd definitely buy this" with no accompanying behavior is the weakest signal in the building — discount it accordingly.