Buy.com has a Creative Labs HN-505 Collapsible Noise-Canceling Headphones for $17.13 shipped after $20 rebate.
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- Impedance – 21 ohms n
- Compact, lightweight — cancels distracting outside noise like airplane engines and loud conversation n
- Lightweight, durable design with soft earcups n
- Driver units – 30mm rare-earth magnet transducer n
- Frequency response – 20Hz to 17kHz