marineman
My advice would be not to,unless you areÿabsolutelyÿstrapped for cash,and the amount you might get would be a pittance compared to the time ,effortÿand indeed expense in building your collection,a dealer would only cherry pick,they may be prepared to take a good quantity but for sure would beat you down on price as "I am taking alot of stuff i wont be able to shift".
If music means something to you and it must to have built a nice collection,then you will surely regret it at a later stage.
I have sold a vinyl collection to fund a house renovation and was around the time you could not buy so much newÿvinylÿwith the advent of the CD,then built up a large Cd collection only to sell it again as i wasÿdisillusionedÿwith CD and still am.Out with my vinyl went my Linn Sondek LP12 regretted it almost straight away and still do.I have recently sold my Arcan CD192ÿwhichÿleaves another large CD collection but this one will be put away until i get the CD bug again and bored with computer based music,which i surely will.
I hope you reconsider
Murrayÿ