Is it safe to use a second-hand Trezor (like from ebay)? I just got a good price from eBay on a supposedly never-used Trezor hardware wallet.  I have no specific reason to think this would be dangerous to use, but I'm being cautious and ask here first:


Are there any reasons why it would be unsafe to use a second-hand Trezor to store my BTC?
Is there any way the previous owner could retain access to it and get at my coins?
Any other risks to a used hardware wallet I should be aware of?
If you update the firmware you are probably safe, but why take the chance? The Trezor itself (or even the included USB cable https://www.wired.com/2014/07/usb-security/) could have been corrupted/replaced by a sophisticated actor.

If someone gave me a used Trezor for free, I would throw it in the garbage. No discount would be sufficient enough for me to justify buying a used Trezor:

https://www.reddit.com/r/Bitcoin/comments/2dbjd9/trezor_tamper_proof_seal_doesnt_help_much_against/