After selling off my short focal length refractor, I am left with a high power eyepiece that is unusable in a f/10 scope. I would like to make a trade for an eyepiece in the 15-19mm range. I will pay/accept cash for a partial trade depending on the value of the eyepiece. The eyepiece is in pristine condition with bolt case. This is a JAPAN model. I will also sell for $130 + shipping.