When you use a previous description for listing a book, please check if it is a hardcover or paperback. I recently received a book that I wanted, but it was listed in the description as a paperback and turned out to be a hardcover, probably because the description that the sender could find listed a paperback and the difference wasn't noticed. Maybe this doesn't bother most people but I don't ask for hardcover books any more -- they take up more room and they're a nuisance.