Customers are more receptive to optional payments when they believe the money directly supports employees rather than the company. This psychological framing increases participation and goodwill, even though businesses ultimately pay their staff.
A 'free' or 'pay-what-you-want' offer creates enough goodwill to ask tough, confrontational questions upfront. This allows businesses to filter for genuinely committed long-term customers, turning a lead generation tool into a qualification test.
Offering a defined price range (e.g., '$149-$299') instead of an open-ended 'pick your price' model leverages social pressure. Most customers will pay more than the minimum to avoid appearing cheap, anchoring the average transaction value significantly higher.