I paid $25 each, they have just the tiniest bit of fungus starting but it shouldn't be hard to clean out and I think was well worth it. This 80-200mm the switch to turn it to manual aperture is missing/broken off, but I got it switched so that is all good. I have never had Nikon gear before, what is the small adjustable ring at the top for and how do I properly use it? It seems like infinity focus change. This one is Tamron.