Kept having second thoughts when these were posted regularly here. Elsewhere seems to be around the ~$140 mark and the deal tends to be pretty popular around the ~$100 range. Sold by an authorised Logitech reseller (Itsaustralia) who seem to have 100% pos feedback.
Edit: Looks like they were $135 only yesterday, so not sure how long this deal will last
Currently $104 @ Bing Lee (NSW & ACT)