My wife was an optician for most of her working years. She started in the lab of one of the super optical companies and went on to earn her ABO License. I've listened to enough of her talking about it over the years I swear I could grind a set of lenses, but that's far from true. She would have a field day with you.
Optical coatings on eyeglasses found their way from photographic lenses. They work and the do make a difference in how the light hits your eyes. Anti reflective and scratch resistant coatings are worth every penny if you do close up work. I tried to save on my last pair of close up lenses by leaving those off and wasted the money that was spent on the glasses.
Polycarbonate lens work is a hazardous process by the way. Most optical labs send the work out to a specialized lab. That costs extra. Poly lenses are also optically superior to anything else on the market. The processes used to create them are guarded trade secrets.
Yes, the markups are huge, but you only have one set of eyes. She would say a dentist can make you teeth you can eat with but no one can make eyes you can see with.
Eric
A friend of ours had a company that made software for grinding lenses for eyeglasses and cameras. Often times it would take more than a year to perfect a program, and several more months to test it before it went to market. Those programs were not cheap, often times they were in the 6-figure range. Add to that the cost of the machinery to grind and polish the lenses, the training and labor to operate the machines, and the overhead like a climate-controlled building, utilities, etc., etc. and the investment is into the 7-figure range. You're not going to pay for that and make enough to live on charging $100.00 for a pair for glasses. In our area the discount vision centers seem to come and go on a regular basis. Every couple years or so there's a new name on the same buildings because the previous owners couldn't make ends meet.
I've been wearing glasses since I was 7 years old. At first, they were glass lenses. They worked ok, but were thick, and heavy, and glare was a constant nuisance compared to today's polycarbonate offerings. Even the first poly carbonates were crude compared to what's available today. With the added coatings glare, scratches, and distorted vision are no longer problems. About the only downside to any glasses today is that you need additional protection when grinding, welding, or doing anything that creates hot sparks or swarf. I've gotten divots on both glass and poly lenses over the years wearing them where I shouldn't have.
As I was growing older my prescription would change every couple years or so. Like others I tried less expensive options, but quickly found out you get what you pay for. The $100.00 or $150.00 glasses gave far poorer vision quality, scratched easily and had inferior quality frames. The better-quality offerings were far more comfortable to wear and had far better vision quality. Even at $500.00 or more a pair they were worth the investment. In my older years my vision seems to be stabilizing. A quality pair of glasses will last 4 years or more. While the price has gone up even a $600.00 pair of glasses are a bargain to me. Without them I couldn't drive, watch a ball game, play any sports at all, or even go for a walk in the woods without getting lost.
Prices today are a bit painful, but keep in mind the cost of business is up. No skilled laborer is willing to work for $20.00 an hour. At the time I retired a skilled craftsman was making in the $40.00 t0 $50.00 an hour range. Ten years later that figure almost doubled. Now that the push for minimum wage is $15.00 an hour or more. Skilled trades people are asking even more. No one is going to stay in business very long if they sell at a loss and try to make it up in volume. They just go out of business quicker.