Just noticed this low cost Ethos style eyepiece . I wonder how it compares optically?
http://www.astronomics.com/main/prod...roduct_id/ES14
UPDATE: Looks like there are a few detailed reviews on the way at Cloudy Nights. It seems that the eyepiece has its own charachteristics and is not a direct Ethos clone, however early reports suggest it has has very good edge field sharpness even with F4 scopes and will prove an excelent choice for those wanting the 100 degree experience but cannot afford a televue Ethos.