Yes, the classifieds here at Birdforum are a great place to start. I've bought and sold many binoculars and always had very good experiences, both as buyer and seller. With Ebay you have (depending on the item) a warranty, so if something goes wrong (say, it was a scam, you pay but got nothing) Ebay will give you your money back (but then, Ebay usually charges a 10 % fee plus some other percentage for dealing with the payment, it was formerly done by Paypal, but now Ebay does it all, and charges it). This is obviously something you don't have here, since this is just a board with ads, and, as a buyer, you basically trust the good will of forum members. However, since you can trace the history and posts of members, you can more or less have an idea of who can be trustworthy (probably not someone whose first post is an ad with a suspicious price). In short, if I were you, I'd try selling it here with confidence. I understand you live in the US, that's good because there's a great number of forum members from that side of the Pond. Nevertheless, I've bought and sold binoculars to/from the US being here in Spain, so in any case it's worth a try.
As for the price, I'm afraid I can't help you a lot there, other than checking the prices in the US. I see a brand new Noctivid is usually to be found somewhere north of 2500 USD (over here in Europe I've seen some prices lower than 2000 €), so I guess you can do some "depreciation maths". It's a model that doesn't seem to come up very easily, so that can work in your favour.
Then you might want to consider if you include the shipping cost (that can make it more attractive), Paypal fees (if there are any) or some other way to offer something special.
Good luck!
.
