Kmart is currently clearing out the Telstra $30 prepaid NANO (and possibly MICRO) SIM cards with 3GB data included. It says for iPad on the packaging but works perfectly fine with any tablet/phone that takes nano/micro SIMs (or normal SIM with an adapter).
Expiry dates on these range from April 2015 to December 2015. Make sure you check the expiry date because a couple I saw were already expired.
I'm usually not the selfish type, but I gave in to my greed on this deal. To save you guys from an empty trip, I have already cleaned out Broadway Kmart, Mt Druitt Kmart and Chatswood Kmart.
Edit It appears I might have been given the MICRO SIM at the clearance price due to a clerical error. It is in fact only the NANO SIM that is on clearance, NOT the MICRO SIM, my mistake. Edited the title/description correctly.
Edit 2: It seems that the MICRO SIM starter pack might actually be on clearance as well. I'll update the title and description again if I can get more confirmations that this is indeed the case.
Edit 3: Updated title/description. So a few people did manage to get the MICRO SIM starter kit at 50c too. If it helps the MICRO SIM starter kits I acquired all had 30 Sep 2015 expiry date on them.
Edit 4: If it helps you folks out, THIS is what the MICRO SIM starter kit I got for 50c looks like. White packaging with teal writing. It is NOT the pink packaging that comes with $30 credit.
At least you didn't waste my time at Broadway.