I simply couldn't believe it, but you can now use your Telstra Account to pay for your Google Play purchases as long as they are under $20.
This includes Pre-Paid mobiles, meaning that your Pre-Paid credit just got more usable. I just bought $80 worth of apps using my Pre-Paid Telstra balance. I now have nearly every app I could want (I think it was 280 last I counted).
Annoyingly items over $20 can't be bought.
How?