I got a 25mm and 10mm pair of EPs included with my Saxon dob that look identical to these. I sold the EPs very cheap on ebay.
But they're not bad at all, will do the job for little cost (if you buy from a seller with a conscience). Infinitely better than the crappy Huygens and Kellners we used to get with scopes before ~Y2K. Worth at most $40ea new IMHO. $20 second hand.
See:
http://www.saxon.com.au/eyepieces/sa...-eyepiece.html