i know that zappos has a great return policy, but how easy is it to obtain a full refund for lightly worn shoes? There is no indication that they have been worn on either the outside or the sole, but the logo on the inner footbed has faded a bit. i plan on covering it up with the provided cardboard and paper to stuff in the boot but they WILL notice that it has been worn if they check throughly. will i get a full refund? any experience? thanks!