The pain of selling near-new that you paid retail for and getting approx. 50% of retail would be unbearable, IMO. If somebody paid $20K for the CD12 within the past couple years and is now taking a $9K loss to sell, I have to wonder what they're moving to.
Selling at a loss is painful if you bought the piece just "to try it out". You lose money a few times, you become a lot more patient when buying a piece for that reason. Selling at a loss something you paid 50% of retail a couple years ago, used it for a couple years and now sell for 40% of retail is rational (at least in audiophile terms), and not too painful. -Kirk