This is a great eyepiece, but I have three of them. I justify two by attaching a deep sky filter on one and "leaving" it there for a quick filter vs. no filter look. The third one just sits in my eyepiece case as a spare. I'd sell one if I got the asking price of $100 plus $15 s/h (paypal OK). The eyepiece is in very good shape. I can't tell any difference between the three of them as far as quality goes. If you've ever used one of these, you know why my price is where it is.