I had a horrible experience here in 2024 where a private seller sold me a new/unused (but not sealed) Lyra Atlas cartridge stating that the original owner had passed before he could use it. After I received the cartridge, I sent it to Wally Tools for inspection with also the intention of having it mounted on a Kuzma headshell. After a week or so, JR called me to let me know that while inspecting the cartridge, he noticed that it had a Shibata stylus and that he was not aware of the Lyra Atlas ever having other than a line contact stylus. He said he even confirmed with the Lyra distributor and concluded that this particular cartridge was not new as advertised and had been retipped. I got in touch with the seller right away and started a Paypal dispute. The seller then said that Believe Hifi in Texas had sold him the cartridge as new/unused (original owner passed before he could use) and dragged them into the dispute as well, because once Paypal refunded me the money, the seller would still be short. I got my money back for the cartridge and so did the seller from the dealer, but still had to pay around $500 for the inspection and shipping to/from and the insurance. Both the seller and dealer did not reimburse me for the inspection. I have since been wary of buying used cartridges.
