Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sony Bargain Headphones

I understand the concept of "you get what you pay for," and I also thought that the Sony brand stood for at least a reasonable expectation of quality no matter the price. So I was very disappointed to discover that these $9.99 headphones are inferior to the ones that came with the Magnavox JogProof CD player that I purchased from Kragen Auto Parts for $15.99.