Hey seth,i bookmarked this thread a while back but forgot to respond,using the orion blue book for audio is a bad idea,It never shows the current market value of anything,i have to question what their information is based on,pick out any well known peice of audio gear & look up what its selling for on ebay & audiogon then check the blue book to see how far their values are off.Ebay & Audiogon are the driving forces behind used gear value & the orion blue book has become a useless tool used mainly by dealers to show at trade in time.
If you sell your gear based on orion blue book values you'll loose your shirt