A quick story. I recently purchased a *MEADE* WA 18 mm 'Chinese' eyepiece on eBay for $56.00.(Gold Coast). It duly arrived & upon unpacking it, found what looked like a nice E/Pc. taking NO notice of what was written on the box. I 1st lighted it a few days later & found that I could not get all of the image into focus. The centre was O.K. but the outer 20% was blurry/flared. Moon was absolute C**P. I tried it in another guys DOB, but it was pretty much the same. (both fast t'scopes, 4.5 & 5). When it was tried in a refractor,F7, the image was better. I put it away for the night. At home, I noticed that it said > 'ETX T'SCOPES' (OWTTE), on the box. Could I have purchased an E/Pc made for long fl t'scopes???? YEP!
It has been returned for a full refund, thankfully.
Lesson learned.
L.