Hmmmmm.... I need to start off with the fact that I'm cheap!
I'm the major bargain hunter. As is...dirt and all, I'd try to swindle it out from under you for around $500...if my butt would fit in a 13" seat (which may prove a difficult selling point for you) Shiney and new looking, I'd go as high as $800 maybe $900 but then like I said, I'm cheap.
What are comparable saddles going for in your area and on ebay
...that might be a better judge of what it's worth.