Hi DJ,
Well, it certainly shouldn't change your perception of Schon, because they really are fine players cues.
What keeps the values down are the sheer number of Schon cues that have been made and sold for a very long time, and the fact that there are a lot of wholesalers and discounters on new models. These cues are readily available and I don't expect the supply to go away in the near future.
The best way to determine cash resale value is to keep an eye on E-Bay auctions, and when you see ones with comparable complexity to yours, that will tell you approximately the cash auction value.
I don't know if this will work, but I ran a search on E-Bay of recently completed Schon auctions, and here's what I came up with. Look at the ones with the green that actualy sold:
http://sporting-goods.search-completed.ebay.com/schon_Billiards_W0QQcatrefZC5QQfbdZ1QQfclZ3QQfisZ2QQflocZ1QQfposZ91502QQfromZR14QQfrppZ50QQfsooZ2QQfsopZ2QQfssZ0QQftrtZ1QQftrvZ1QQnojsprZyQQpfidZ0QQsaaffZafdefaultQQsacatZ21209QQsacqyopZgeQQsacurZ0QQsadisZ200QQsargnZQ2d1QQsaslcZ0QQsaslopZ1QQsofocusZbsQQsorefinesearchZ1
You will see there were some really fancy Schins that got over $1000 and an R-12 that did well, but the most of the usual Schons were in the $500 - $700 range.
Chris