I hate to do this, but I am selling my 31 nagler. Bought in October of 2001, this eyepiece is in excellent shape. The reason I am parting with it? I bought the 22 nagler and I find that I use it the most.
Brand new, they sell for $620 + tax, that's over $660 here in California!
I will part with mine for $560 + about $14 for shipping and insurance in the continental US.
I would be willing to trade the eyepiece for a 12mm Nagler type4 + cash. Otherwise,
paypal preferred. If using this option, ad 2.9% (what paypal charges me)
bank check or money order accepted as well.
Thanks for looking.