I use the round flower pot saucer bases and my hogs hate them with a passion. The sand boas love them so I've got a stack of the black hides with the rest of the supplies just in case. With the charge back, it's much like PayPal. You only have one shot once the charge back has been processed so if you cancel the claim but want to file a new one later, they won't allow it. At least if you have a Visa card. I hope it all works out for you.