On sunday I stepped on my son's glasses. Fortunately he wasn't wearing them at the time. These were the spares, since Ben broke his regular pair a couple of weeks ago. I went to a couple of local opticians and one was able to commit to a same day delivery as long as I ordered slightly more expensive lenses. He gave me a list of features which I ignored since I figured I was essentially just paying for an expedited delivery. But it got me thinking, if I _had_ been interested in those features, how could I tell if I actually got what I paid for? Cheap and expensive lenses are essentially indistinguishable after all.
Any ideas? -- b
