The 13mm plossl is a decent eyepiece, not the best in the world, but I'm not asking for a Radian in exchange. Paul Rini made these with surplus optics and the barrels are plastic. Views are pretty good in the center of the field, but it's no Televue plossl.
What I would like is a nice mirror diagonal for a .965" focuser. I don't need the eyepiece anymore (replaced it with a 14mm Epic ED-2 from Orion), but I could use a good .965" mirror diagonal. Something you may have laying around unused.