Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Kat's 1153 Handi-Heat 200 Watt Magnetic Heater

Do not buy this product they are all used. I recieved the first one and it had car grease and obvious wear scratches on the metal magnetic part. I had them send a new one and the same thing. After they sent a 3rd replacement which was also used I sent it back.