I've also been trying to assess the value. I was surprised to see from a few sources that they seem to be in the low/mid $20K range if pretty nice. I have no idea if they are in much demand.
I'm actually talking to the owner on a trade, mine is probably worth a little more but the Barracuda looks like a fun car with the 4 speed. I don't think I would be interested if it were auto.
He's been out of town and I'm going by pictures right now.