I have to ask the question. Why do you except change of mind returns? And doesn't the buyer pay for a change of mind return? You really are opening yourself up to scammers, probably one in action here by the sound of it. Who opens a return the same day it's posted? The current scammers are highly skilled, they know the system, how to find loopholes or seller vulnerabilities (example return postage not worth paying so they get refunded instead). Isn't that making it a little easy for them. I would pay the package label and make them return it before being refunded