RE: What is a used 2004 Darton Typhoon worth?
If you trade it at a dealer, probably not much unfortunately. I doubt any dealer is going to give you what you could get selling it on your own. The only way to know is to walk it with it and ask. It may also depend on what bow you are going to buy and how much money you are going to spend.
I don't think dartons have as much resale value as some of the other bows, but that may have changed, I know they sure want more for them now! A good way to know is check out Ebay and see what they are selling for, or Archery Talk, they have a classified section.
I would guess somewhere around the 300 dollar mark, its usaully about half or less then what you paid for it to begin with. Sucks, doesn't it. Honestly though, it's worth whatever you can get out of it. If you wait around long enough you may find someone that is willing to pay what you want.
Paul