Re: CR39

"Tony Houghton" <h@xxxxxxxxxxx> wrote in message
news:20071028200655.16198e1a@xxxxxxxxxxxxxxxxxxxx
Polycarbonate lenses aren't actually cheaper to
make than CR39, are they? Just a higher profit margin because they
usually charge more for them, which this optician hasn't done.

Polycarb material is more expensive than CR-39, but it could conceivably
cost more to stock CR-39 in all lens powers (finished) or all base curses
(unfinished) if the demand is low.


.