[lambda_lord]

Braintree and Adyden do as well to my understanding.

Payment processors are low-margin. It costs interchange fees and scheme fees to reverse a transaction, it’s not free.

It’s unfortunate for the businesses that process a lot of returns, but processing fees would go up for everyone if returns were free.

[poxrud]

The payment processors are only charged a tiny fee, not a percentage of the transaction. Up until a few years ago Stripe, Paypal and others had no issues with refunding the entire amount.