Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A good purchase if was $1

My my expensive headphones that worked fine for months suddenly stopped working only for the left side. I was away from my normal home, so I decided to buy these Coby headphones as a cheap replacement until I got home to solder my old ones. Delivery was fast, but by the very second day, these headphones sounded like they had gone through a year of rough abuse. Audio was only present on the right side, never the left, and even then, only about 90% of the time.