These have hit an all time low according to PriceSpy(pricespy.co.nz) at $148. Neil previously posted them at their previous low of $188 here(choicecheapies.co.nz) also some good info and reviews there. You can get another $5 off to make it $143 by signing up to their newsletter, details here(choicecheapies.co.nz). The i30 model is also available for $128(harveynorman.co.nz) or $123 after newsletter sign up (also an all time low).
The i60 are currently $549 at Mighty Ape(mightyape.co.nz) or about $420 Shipped at Amazon(amazon.com)
Some great reviews for this unit, certainly the time to grab one if you are looking for a headset.