Just sold my Bianchi Alfana a few days ago, listed on Blue book for $75.00 trade in value. The private party value is listed at $127-$131. I got $300 for it and people were in line when I posted it on Craigslist. I don't think Blue book reflects the current situation at all. Also I think they undervalued the bike as Bianchi is a desirable brand.
My LBS didn't really want it as they are not in the business of selling used bikes. He told me to sell it on my own is the best way to go. He said he sometimes takes in used bikes to facilitate a sale but would rather not take a trade at all. He has to lay out money and then sit on them until they sell.