Hi Hunter8282:
Dan Wessons don't come up for sale very often in this area, but when they do, I usually see them in the $600.00+ range depending on condition and/or accessories. The Pistol Pacs usually are in the $1,200.00+ range. I don't recall ever seeing one for sale with more than one barrel. The scope pictured on the one in your post is an oldie - I don't know if they are still in production or not. So I wouldn't attribute much value to that. If I were buying it, I would probably be interested if it was in the $600.00 - $650.00 range knowing I would have to buy new rings and a scope to get the best performance out of that 8.0 inch long barrel.
Regards,
Dave