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● CRITICAL #DW-003 Sneaking

Hidden Costs

Concealing fees, taxes, or surcharges until the final checkout step.

What Is Hidden Costs?

Hidden Costs is a dark pattern that falls into the Sneaking category. Concealing fees, taxes, or surcharges until the final checkout step. By exploiting specific cognitive biases, companies use this manipulative design technique to push users into decisions they wouldn't normally make.

Real-World Examples

✗ Dark Pattern

An interface employing the Hidden Costs pattern purposely obscures the right choice and heavily pushes the user toward the manipulative action.

✓ Ethical Alternative

Clear, neutral design where all choices are presented equally without misleading framing or forced actions.

Severity Assessment

9.5

CRITICAL — Based on its impact on user autonomy and potential financial or privacy harm, this pattern is rated as CRITICAL.

Remediation

Replacing Hidden Costs with ethical UX involves:

  1. Prioritizing user transparency and informed consent.
  2. Making opt-outs as easy as opt-ins.
  3. Removing asymmetric visual weights from critical choices.

Think your product might use Hidden Costs? Book a UX audit →

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