I don't understand... You sell a method? Or you sell "the object"?
This is a "black trick" like a chargeback it seems.... and you can "wash" money...
are you sure of this type of selling?
Sorry if I make some mistake, but refund for free sound bad...
If you read the thread properly, I have tried it on two of my purchases and want to try it for others too before launching it as a service. Right now am doing this for free. It worked well for me though