We do not charge a fee for refunds. The return of tokens is done by sending the private key where your funds are stored, or, in the case of coins, a form will appear on the exchange page where you need to enter the address to which you want to return the funds and click the "Submit" button. After this, your funds will be automatically returned to you.
I was not aware of that. It's more than generous approach. I have seen services to charge x or xx% to refund with the excuse of admin fees and things. I guess it's fair that the receiver will pay the refund network fees than the business.