I'm well-acquainted with these discs. I must have bought thousands of them over the past ten or so years. Slightly worried about the packaging this time. The envelope was previously used, although sealed tight; when I opened it up and took the pack of discs out, I found the shrink wrap had been torn! I counted the discs and, sure enough, there are ten of them! Thanks folks. Each mini disc has it's own sealed wrap, thankfully, so they should be all right. Amazon have always sent perfectly good items so wondered who let them down this time?