Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not good quality

I bought this flat iron knowing that I wouldn't be getting the "best" quality since I was only paying $19.99, but I've only had it for about 2 1/2 weeks (using it once a day) and the coating on the plates has already begun to chip off. Not good! It's done a good job of straightening my hair, but given its quality issues, I can't recommend it.