Value is hard to say. Whatever someone will pay is the answer.
Condition, weight and length are the key to pricing. There are shooters and there are museum pieces and everything in between.
Some woods used were very striking and buyers, including myself will pay a premium for such bows.
$200-$600 is the wide range these days depending on the above examples and the right buyer at the right time.
Confused yet?........ Enjoy!
.....Philip