chakster
If you're happy buying used cartridges with supposedly 500 hours on them, be my guest! But I don't buy used cartridges or used tires, and for many of the same reasons.
... i do not believe that stylus with 500 hrs on it can destroy any LP with simple play at correct VTF.The number of hours on a stylus is only one factor to assess. Cartridges that were not properly aligned when new often result in styli that are worn unevenly. Styli that were used to play dirty records are also subject to accelerated wear, and then of course there's the potential of damage just from mishandling.
If you're happy buying used cartridges with supposedly 500 hours on them, be my guest! But I don't buy used cartridges or used tires, and for many of the same reasons.