^^ Noise cancelling headphones from reputed companies won't come under 3000. But i think Sony has launched a new noise cancelling headphone in India. You can check it out at
www.sonyindia.co.in > Personal audio section. It'll come under 3k. Dunno about the sound quality though, but will be good considering Sony's past record. You can also check out Sony's Fontopia range of earphones. These aren't exactly noise cancelling type, but are decent for blocking out most noises. They can be purchased from shops selling foreign goods.
In bluetooth headsets, there aren't any proper noise cancelling types available right now, but you can check out Sony Ericsson's HBH-DS970. Its a stereo bluetooth headset with decent noise cancelling properties. You can check its review here:
http://www.mobile-review.com/review/...ds970-en.shtml
But it won't come under 3k.