Seems to be a pretty good price for these vs other retailers:
JB HiFi @$129
Sony store @ $129
Kogan @ $99 + delivery
TGG @ $69
Specs:
Reducing up to 95% of ambient noise, this swivel, folding design is ultra-portable with a whopping 80 hours of battery life. With a 30mm dynamic driver unit for clear and rich sound, experience the awesome sound quality!
Features:
Model: Noise Cancelling Headphones / MDRZX110NC
Colour: Black
On-ear design
Compatibility: N/A
Noise cancelling with up to 95% reduced ambient noise
Connector type: 3.5mm mini-phone stereo
Cord length: 1.2m
Driver: 30mm Dynamic
Accessories included: N/A
Folding design for ultra-portability
30mm dynamic driver unit for clear and rich sound
80 hours battery life (Noise Cancelling on)
Works even when battery is depleted (passive operation)
L-shaped plug
Tangle-free
Swivel ear cups
Headphone power indicator: LED (green)
Requires 1 x AAA battery (not included)
Dimensions (approx.): N/A
Country of origin: N/A
12 Month MANUFACTURER WARRANTY
Technical Specs:
Sensitivity: 115 dB (on), 110 dB (off)
Impedance: 220 Ohm (on), 45 Ohm (off)
Frequency response: 10 - 22,000 Hz
Maximum power input: N/A
I have this, downside for this if you don't turn on the NC, the sound quality isn't that great. NC itself isn't the best but for $50 its good enough.