Audio-Technica has two new sets of noise cancelling headphones that are each under $100. Most Noise Canceling headphones will set you back more than that. The ATH-ANC27 and ATH-ANC25 both have similar features. The ANC27 headphones can block up to 85% of the sound in a room using active noise cancellation and are an over-the-ear design, while the ANC25 are on-ear style and can block 80% of the sound in the room.
Both use active noise cancellation tech and are compatible with Apple products like the iPhone and iPod. And both need an AAA battery for the noise cancellation feature. The ANC27 headphones are $99.95 and the ANC25 sell for $79.95.