I've had the same issue with speakers lately. I had what seems to be a wanted speaker, and it was the latest version, just recently introduced. I basically had to give them away. I think part of that is the market, and the other part of it is that not every one is familiar with latest rendition.
lack of interest
I have placed about 15 components on the Gon over the past 3 years or so.Everything sold in a matter of days except for 2 components. The one is a pair of Eminent Technology LFT-8As. It was for local buyer only but living inbetween Milwaukee and Chicago I thought there would be someone that would love to buy these beauties. I placed the add 3 times. They might be sold now but the reason I am starting this thread is I am curious how many have had the same surprise. I had the oppisite surprise where I have gotten Emails just minutes apart for over an hour.