This is a  Plus Add On.

Plus Add Ons are included in all Plus or higher premium membership plans.

How it Works

The Variable Pricing Add On is a plugin for “donation-type” sites, where you give members the ability to give more or less than the recommended amount. This model is sometimes referred to as “pay what you want” or “pay what you can” pricing.

When a user completes membership checkout on your site, they will have the option to adjust the price via a text input field.

The price they select or enter will override the initial payment (amount collected at checkout) and any recurring billing amount for the level (i.e. if your suggested price is $10/month and the user enters “$15”, they will be billed $15/month ongoing).