Posted by Mountain Fan on 11-29-2008 at05:16:
many just list 'em on ebay or amazon and then let everyone here know by posting the link.
if you didn't want to do that, you could probably come up with a price guesstimate by looking at what has sold before on ebay. the buechner's demo tapes are too rare for that, though. some of the CDs are also used on other places. out-of-print CDs I have seen generally go for at least $30-$60 dollars with the rarer and more popular ones sometimes fetching more. FS and original Random Acts might not be the most popular, but they are probably rarer too so there value is still probably up there somewhere. i tried to get a box set for awhile, but they always went for more than i was willing to pay - usually $100 or more, the cheapest i might have seen one go a couple of years ago was maybe $80-$85, which is still more than i would pay now.
so, decide whether you actually want to sell them on an online site or not and for what price. you could post them for sale here first for whatever price you decide and have people PM you or email you and give a deadline whereby if you don't hear anything and/or get payment then you will sell to the world at large.
thanks and good luck!
my 2c fwiw