After the gym my wife and I checked out Visionworks, which is in the mall. I picked out a metal frame I liked and asked the cost for CR 39 trifocals. It came to $66.68 without the $20 insurance or whatever it was.A tint with the 80% discount would be $4.
I may go for a spare pair of trifocals with light yellow tint. My wife may want some bifocal sun glasses and that cost was about $45.
The ratings I saw on the internet were bad, and I mentioned that to the young lady waiting on me. She said thay had talked about that this morning, and explained why some problems could be encountered. However, the lab is in the store so I am not sure how much trouble I could have if I go for the deal. They get a lot of business from my observations.
FWIW,
Jerry