Ebay claim certain items you cannot send by simple delivery for example Stamps/coins banknotes, this is untrue. They have no idea why when I called them they say it is a software error, They are taking a long time too fix it.So my advice is if simple delivery is forced apon you listing and Royal Mail do not guarantee it and Ebay will not refund you. Take them to the small claims court.They know about it and are doing nothing.Every are useless and hardly guarantee compensation on anything so good luck there.