I have to point out that I agree that optometrists are not charging enough for exams. As a future optometrist(class of 2010) I will have amassed a debt of nearly $250,000, but then will have to sell my services at $45 an exam(just an estimate based on local exam prices). In the late 1800s an early optometrist charged $3 for an exam. In today's dollars, I believe that is somewhere around $150-200 per exam.
That doesn't mean, however, that I agree that the price of glasses is artificially raised to cover that discrepency. First of all, most opticals charge AT MOST 2.5-3 times retail. Meaning a frame they are selling for $150 cost them $75, so they made a $75 profit on the frame and usually less on the lenses. Then they have to pay rent for the space, wages to the employee who sold it, wages to the lab or the lab technician to make it, taxes and other fees. At what point are you willing to let a business make a profit? Do you go into Best Buy and accuse them of overcharging you on a pack of batteries that is marked up 2000%(and they are)?
What you are not considering is as the previous writer pointed out, all the time invested in the making of and adjusting of said glasses. Additionally, most of the time opticals will not charge you anything if your glasses need to be changed within a certain time period due to a prescription change. BUT they have to pay for those new lenses. So that cuts into their profit margin. Let's say that I sold you a pair of varilux progressives that cost me $150 and I sold them for $350 in a frame that cost me $50 and I sold for $150. On the front, it looks like I made a profit of $300. But I had to pay for those lenses to be made, which probably cost $50-75 dollars(this is assuming I don't have my own lab and have to outsource it. If i did have my own lab it will still cost a lot because the machinery to manufacture lenses costs $20,000plus not to mention highly trained employees to run it). Now I'm down to a profit of $250. Now let's say that you happen to have been tired when you had your exam and what you thought was a great prescription then just isnt' working out. Or maybe you have diabetes and you blood sugar was high which artifically inflated the amount of minus in your prescription. So you get a re-check and now I have to re-make your lenses. It's not your fault that the prescription changed, so I'm not going to charge you to re-make them, but I had to buy another pair at $150 plus the $50 lab fee. That brings my total profit down to $50. Plus I have to pay my employess...So all in all, 1 remake and I'm in the hole. How ridiculous is that?