His expectation seeking confirmation bias. A 10k player that sells for 600 will be by far the exception, not the rule.
Things that make you go, "Hmmmmm...."
the Muse was about $10k new years ago, I paid $650 for it on Audiogon
What CD player can I buy that will hold its value and not be near worthless in anything more than a few years?
New or used.