I have used a number of ortho eyepieces including Pentax SMC (for sale here on Astromart)Takahashi, University, and others. Thisi s the sharpest, best contrasting planetary eyepiece of the lot, by a substantial margin. I don't know how they make these, but they are as perfect as I've seen. I had a 3 element Zeiss 25mm that I sold to buy this 4 element, and it is easily worth the extra money. We are getting out of the hobby and selling off much of our stuff over the next month.
Anyway, there are a few small, light scratches on the barrel, but otherwise, the eyepiece is perfect, and I have a screw case for it.
$165 OBO plus shipping.