My daughter travelled with school to the USA in April and needed a SIM card for her phone. She could have used my UK pay as you go card (see my Europe phone page), however I wanted to find one on a dedicated US PAYG plan for that trip.
simcorner came to the rescue with a SIM on the T-Mobile network. Whilst not as flexible with the same data limits as Europe (more competition there), it worked fine and was no hassle. I just put it in her phone before she left Australia (with phone powered off) and when she arrived and switched it on, she was online instantly.
Unlike the SIM I used for Europe this one expires after a few months with no activity.
It's all about the coffee 