Over priced. For the price you can throw in a couple more dollars (or catch em on sale) and get a Ti-pot with a lid. I do have a Ti-pot but I dont buy in to the ti-cup ordeal.
Oli-cup / Glacier cup for $10 both are stronger, cheaper, keep liquids hot longer. For 66-70% cheaper price, I can deal with the extra ounce of weight. And I don't get NEAR as upset if lost or stolen.