I have a 6mm Plossl in excellent condition for $20 + $2 shipping CONUS. It is only marked "plossl," so I don't know the manufacturer (I bought it on Astromart). It works great to my newbie eyes, but I now know I can't use that much power in my scope. Used only a few times by me and in excellent condition. $22 shipped with bolt case. Check or MO only (no Paypal account).
I am also interested in trading toward a unity finder (Rigel preferably), or toward a Meade SWA or UWA eypiece in the 8-14mm range if anyone is interested.
Thanks for looking!