Thank you for the informative response. Currently, I have a rather nice (and pricey, but I received superb follow-up service from the local, non-chain shop over a period of several years) Italian frame with polycarbonate lenses. One thing that has slowed their replacement is that this model is no longer offered, as of some years ago. But both the frame and the lenses are reaching an unavoidable end of life.

The shop has changed hands, it appears, and also, extrapolating prices forward to today, they would simply be more than I'd be comfortable paying right now. But I'd still pay relatively more for something similar -- just without the final round or two of high markup.

This pair has lasted well over a decade. So I don't view the past expenditure as a waste -- both for the resulting durability and for the consultation that led me to this model. But, again extrapolating in my imagination, looking at upwards of a grand for a pair of glasses just seems extreme.

I'll have a thorough look at your recommendations. Thanks again.