The concept

A refund is you returning the money by your own decision, within the refund policy. It's different from a chargeback, in which the buyer goes to the bank and the amount is taken back by force.

The difference matters more than it seems. The refund returns the amount and closes the matter. The chargeback returns the amount, charges a fee, eats into your dispute quota, and, if it piles up, takes your account offline.

That's why refunding quickly when the buyer asks is a financial decision, not a courtesy: it costs less than the same return arriving through the bank's route.

How it shows up in practice

A buyer of yours notifies you they couldn't access the product and asks for a refund. You check their account, see they tried to log in twice, and realize it might have been a password error. Even so you approve the refund, and the amount goes back through the same payment method used in the purchase.

We see our customers as invited guests to a party, and we are the hosts. It is our job every day to make every important aspect of the customer experience a little bit better.

Jeff Bezos Source: Jeff Bezos's letters to Amazon shareholders.

A refund is you deciding to return money on your own terms, without the buyer needing to go to the bank to dispute it. The difference is purely financial: issuing a refund quickly costs less than defending the same reversal that would arrive as a chargeback, which charges a fee and consumes your dispute quota.