New items are guaranteed to be BRAND NEW and never to have been used. If they are sealed and carry a manufacturer's guarantee, you should contact the manufacturer. If they are in bulk packaging, you should contact me for a replacement.
Used items are guranteed to not be Dead On Arrival. You can send it back to me for replacement only.
AS-IS items carry no guarantee expressed or implied whatsoever! No returns, no refunds, no arguements -- regardless!!!