Might want to list it here, and if it doesn't sell in a couple of days, head to ebay. Its easier to list here, and you are dealing with a high-class clientele. /ubbthreads/images/graemlins/smile.gif
I'd say look at the manufacturers prices and deduct 20% due to the fact it is pre-owned (assuming that it is pristine?) If it has an old battery deduct the cost of a new battery. If it cosmetically damaged deduct another 10-20% Of course if you put it in an auction you may get more than it is really worth but will still loose out the sellers fee.