Where are you getting your specs

I've never paid any more than 250 for mine and I've had to wear them for the last 20years. Its the frames that are the biggest rip off, not the lenses, they are only about 1/3 of the cost of the cheapest frames. The ones I'm using now have had the legs replaced about 3 times using those from the $5 magnifiers

and they are not those flimsy looking "fashion" frames at twice the price. My lenses need to be tailored to my eyes as there is a vast difference between the requirements for the left and right. Never had a bad pair. Shop around, you can save heaps as its quite a competetive industry.
Bill