One of the most useful contributions to the five pages. Yes, surprising how many told what they paid, which is totally irrelevant.
I am intending to visit a hospital. The point you make about 'knocking a little bit off' could be a factor. When tested at the shop I wasn't entirely convinced about one eye, the one that had changed since I last got glasses, but was told it was better not to change the setting any further. It was a bit vague due to translation limitation. It may well be that a 'stronger' prescription might cause some dizziness. In that case, I'd have to live with less than perfect vision.
I've also reached 75, so I have to expect some deterioration I suppose. whether it is something more, hopefully the hospital will reveal.
Of the 20,000 I paid, the frames were 1,400, discounted from 5,000. The cost of the progressive lenses made up the rest.