Hey everybody. I'm new here (sorry), but my brother-in-law speaks highly of this site and said this would be the best place to ask for help. My friend is looking to trade me an American Eagle NVEC-501 Night Vision Scope 3rd Gen, with 2 lenses. One is a 75 ml, and the other is a wide angle lens. It's barely used and in great condition. I do not know anything about them. My goal is to sell it. He is trading me the scope for my mountain bike, and in turn, I want to sell it to get a new mountain bike. He said they got 2 of these for $7800 and that it's military grade. So if anyone can offer advice on what it's worth and the best way to sell it, I'd greatly appreciate it. Thanks.