Strava premium 2 months membership for AUD $1.39 (Normally $12.99 per month). You can cancel at any time and still keep the premium features for the next 2 months.
Not sure if only applicable for new subscribers. Looks like it's only for Android users.
I use the app mainly to track my cycling. Can be used for various sports.
Nice but I've never bothered with Premium (even the always available 'one month free' offer) as I don't own a power meter. I made a small donation and use StravistiX for additional metrics instead: http://thomaschampagne.github.io/stravistix/