Heck I have for sale a Celestron 35mm Ultima series eyepiece.
This classic eyepiece is in very good / excellent condition, body, glass and coating are all spotless.
Comes with top and bottom caps, a winged eyeguard and as I received it many years ago in a bolt case, that's how I'm selling it.
I often used this eyepiece in my scope instead of fussing with a separate finder scope as it's low magnification and huge field of view make locating and centring objects easy.
Asking € 100 plus postage.