Customize the price for non-recurring addon
Changing a one-time payments price.
You might have the need to negotiate your one-time purchases/non-recurring addons (charges) prices with some of your customers and apply a custom price for them. In such cases, it might not be feasible to create a new addon/charge for each customer.
Currently, we have this price override for plans. For one-time purchases like non-recurring addons (Charges in PC2.0) this option is possible directly from Admin Console but from Checkout flow, this is only possible via API to ensure the access is with the merchant and not the end-user.
Input param - addons[unit_price][0..n]
Related articles and documentation
How can I handle one-time purchases with Chargebee?