I was cooking sweet potatoes in a bed of salt the other night and I hear a pop from my oven. Thinking a sweet potato skin had popped I opened the oven door and it was in fact my glass lid to my Calphalon Saute pan. Yes, it shattered at 400 degrees. Thank you Calphalon, I'll remember that when I replace it.
With that in mind I wonder about the quality control of major brand names. You may recall that I had the "copper" core of my Emerilware made by Al Clad melt out and to my surprise find out the copper was in fact aluminum. Strange, it was even colored copper on the outside. I of course wrote an article and took pictures as well.
I didn't pay a ton for the Calphalon pan but Amazon is listing it at $175 and on sale for $75. I think for either price the lid should withstand normal oven temperatures.