Sliding pay button with minimum price

Leanpub nails the art of “feel good” pricing. Their ebook checkout shows a $10 minimum and a $12 suggested price, then hands the control to the buyer. The slider lets you decide how much to pay—and shows exactly how much the author earns.

Why it works

• Anchors value with a clear min and suggested price
• Triggers generosity instead of guilt
• Builds trust through transparent author earnings
• Adds a fun, interactive moment right at checkout

Real-world examples

• Humble Bundle’s “pay what you want” model has topped $100M in sales
• Wikipedia’s donations thrive on optional higher gifts
• Patreon’s top supporters often pay more than required just to help their favorite creators