Instruct: Classify the given Amazon review as either positive or negative.
Query: Good thing for the price you pay

I bought these plugs mainly for everyday public transport usage and that's what they do best, great sound isolation. When it comes to sound, they are average, very strong bass, very weak midtones and average treble. This can be mostly amended with an equalizer in any player.I'd give them 3/5 for the sound, but the isolation and cheap price (bought them for 13$) lift it to 4/5.