For how much can I sell my jh16?
Well.....it sort of depends on how old it is and what condition it is in but you will take a beating since anyone that buys it will have to put more money into it re-shelling it again. Do a search in the "for sale" thread/forum here
its a few months old... I found out that $800 is the average for second hand.
I think you can get that much for it. Now that JH implemented the freqphase folks have started to look for that on the earphones.