RE: Whats it worth
Do a search on the completed auctions, that'll give you an idea. You'll do better by splitting it up and selling the sight, & arrows on seperate auctions. Another thing to consider is your feedback rating, if it's low you might not get as much. Also on Ebay you need to be real honest on the condition and list any defects such as paint chips, scratches etc.
There's enough difference in new price at different shops it's hard to give you a figure.