Delivered were not 30m, but "only" 29,5m cable. This may, less fall in the consideration of a single delivery, significant. But in one way or another similar review was reported this system seems to have. If you then, calculated conservatively, goes from 100 to 200 orders a month and every 0.5m to 2m missing, then is this "problem" is no longer negligible. Especially since I as a customer pay for 30m cable and not for 29,5m. In addition, is also possible that a customer needs the full 30m cable, which he ordered.