Edit - vid works now!
have they sorted the mic on that one yet?
Saw a few bad reviews in sound quality when I was looking. Not that you need it underwater anyway..
If others don't need the wifi version, officeworks has a migear 1080p @25fps non wifi model for $59 and a few mounting accessories that may fit.
(dick Smith has a migear wifi one for $98 - might be the earlier one with bad mic?)