Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Wearever Hard-Anodized pan has warped bottom

Wearever Admiration Hard-Anodized 12-Inch Saute PanI bought this pan on the recommendation of America's Test Kitchen. It's about two months since I received it so I didn't realize until I got my new ceramic top stove last week that the pan is NOT flat. I attributed its 'rockiness' to my old coil stove burner which had seen better days.Now I have to look for and buy something that works on my new stove.Wasted money!