Buying glasses of any type is an overly expensive proposition since they have become a fashion statement. I splurged on a pair of sunglasses that cost me $350. I really liked the soft grey tint and they were gentle on my eyes. Unfortunately my truck was broken into and the glasses disappeared. I searched high and low but the glasses had been discontinued. Finally I found a pair in France no less. All in with shipping cost me $50. Moral of the story. There isn't one. Buy what you want when you want is the modus operandi.
