Here's a 4.7mm Meade Ultrawide I bought for the fun of it yesterday from a fellow astromarter who had taken it apart. I enjoyed the exercise and observing a little bit with it last night and earlier this evening, but I have a 5mm Nagler Type 6 and 5mm Radian on the way, so I really don't need to keep this.
I know it's correctly assembled because it checks out sharp edge-to-edge in my ETX-90 and 7" f/6.7 Newt, and it's probably at least as clean as it was when it beckoned the previous owner to disassemble it in the first place.
However, it does have a significant blem. The coating on the outside surface of the field element (the built-in "Barlow") is about 50% wiped away. For some reason the coatings just sort of "came loose" in this area. I've only seen that happen once before. I won't insult your intelligence by saing it doesn't affect performance, but in fact I can't see any artifacts from it, and it performs quite well.
Anyway, I figure this $170 eyepiece goes for about $125 used if perfect, and it obviously isn't, so figure out what you think the discount for the blems should be and make me an offer.