The encyclopedia
Dark Pattern

The Slow Reveal

The effect

"The price you saw is never the price you pay."

The method

Show a low headline price, then reveal mandatory fees one screen at a time — service fees, cleaning fees, processing fees — until the user is too committed to back out.

Black hat
9/10
Most common usage on the angel→devil scale
The ethics spectrum

Same hack. Three very different choices.

White hat

Show the all-in price first; let users break it down on demand.

Grey hat

Headline price excludes optional add-ons but mandatory fees are visible before the cart.

Black hat

Mandatory fees revealed only at the final checkout step, after card details are entered.

The template

A formula you can steal

Headline: [LOW PRICE] → page 2: [+fee A] → page 3: [+fee B] → final: [REAL TOTAL].
Spotted in the wild

Where you've already seen this

  • Concert ticketing's 'service fee + facility fee + processing fee' stack.
  • Short-term rentals' cleaning + service fees doubling the headline rate.
  • Airline ancillaries: bags, seat selection, carry-on, printing boarding pass.
When to use it

Never as a primary tactic. The FTC, EU, and California now require all-in pricing in many categories.

When NOT to use it

Anywhere repeat business matters. Drip pricing is a one-shot weapon that destroys lifetime value.

The 5-minute practice

Try the trick today

Take your top product. List every charge a buyer ends up paying. If the headline price is more than 10% off the real total, change the headline.

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See it in action

1 teardown use this trick