I recently ordered a Campy Record 13-29 cassette from Planet Cyclery which was advertised as coming with a lockring. When it arrived the cassette was new in box with instruction manual etc, but no lock ring. I contacted Planet Cyclery by email and they responded that some cassettes are not supplied by Campy with lock rings anymore, but they said they would send one to me since that is the way they had advertised it. I received the lock ring within a few days. I was satisfied with the response as it could have gone the other way and this indicated that the company does have integrity, although the transaction was not completely trouble free.
Actually the purchase of this cassette was a trial order from this company as I have been considering the purchase of two full Record groups for building out two frames and was less than certain that it was a good idea to trust them for direct purchase of the materials outside of the ebay's protective envelope.