WOW HD (US/AU/UK sites) are having multibuy sale where you get 5% off on 1 item, or 10% off discount of the total price on 2+ items purchased. Discount will be automatically applied to the cart. Excludes iPods and gift vouchers. Ends midnight tonight.
Found a Madcatz Bluetooth Headset for PS3 (says compatible with other devices such as mobile phones, PDAs and computers) for $6.60 delivered:
http://www.wowhd.com.au/games/madcatz-bluetooth-headsets-ps3…
Some reviews here:
http://www.mightyape.com.au/product/PS3/Mad-Catz-Bluetooth-H…