PRICE.......$$$$$$$$$$$$$$$$$$$$$$$ $$$$$
You already have a large range of eyepieces...depends what you want it for.....planetry - DSO
Nagler's are know for their 82 degree field and their sharpness right to the edge of the field....meaning widefield.
Plossl's dont have the widefield.....around 50 degree's....
Making eyepieces with widefield while still keeping their sharpness right to the edge is a costly exercise.
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