This is about 2 years old and has been my favorite EP for galaxies. The FOV is simply amazing, and I'm only selling it because I'm migrating to 2" EPs (thus, I need money!).
This EP is apparently an older style, as the Siebert web page now says these are threaded for filters. This one will take a filter as a snap-in.
I think this is probably well worth $45, but I've gotten so much use out of it that I'll be satisfied with $35 including shipping in the US. Email me for more info.