i'd say check your local craigslist for comparable bikes and prices...i found 2 on our local...one for $400 and this one for $800...
http://bend.craigslist.org/mcy/2265551093.html
and another in Portland...newer...for $650...
http://portland.craigslist.org/wsc/mcy/2280469469.html
and remember thats asking price...in my experience most people will take 2/3 to as low as half of what they wanted...especially with cash...
good luck with your sale