Instruct: Classify a review as either positive or negative.
Query: Lukewarm to Cold Coffee

This coffee warmer is expensive, I don't care if they do give you a mug with it, it's too much money. I've tried 3 different cups including theirs and it doesn't keep the coffee warm. Even when the cup is almost empty, the coffee is only lukewarm. The warming plate is kinda hot to touch with your fingers but it won't do anything for the cup or coffee in the cup. Not a good buy even if it was half price. You're wasting your money buying this.