Loss aversion is one of the most powerful cognitive biases in behavioral economics. People feel losses roughly twice as intensely as equivalent gains — and smart experimentation programs use this asymmetry to drive conversion.
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A pricing page can raise revenue and still make buyers feel tricked. I see this when a team adds urgency copy, gets a short-term lift, then spends the next month dealing with refund requests and defensive sales calls.
Most pricing page tests fail for a simple reason: teams treat pricing strategy like math, while buyers treat it like psychological pricing. On the page, people rarely ask, "What's the optimal plan?" They ask, "Compared with what, and what do I lose if I choose wrong?"