I have an old iPhone I was given, and I'm using that on prepaid. Costs me about AU$30 month and for that I get 300MB data + a few hundred text/mms + few hundred

I have an old iPhone I was given, and I'm using that on prepaid. Costs me about AU$30 month and for that I get 300MB data + a few hundred text/mms + few hundred minutes + free tethering (we've had iPhone tethering for about a year now)