USA SIM cards
The AT&T and ZIP SIM USA sim cards we used to sell are now available from simcardguru.com. These are still shipped from our Melbourne office and we still handle all after sales support.
If you're going to the USA you can buy either AT&T or ZIP SIM sim cards from simcardguru.com. The ZIP SIM sim cards are a good value option for a short trip and the AT&T sim card is a more flexible option that is better suited for a longer trip.
ZIP SIM USA data-only mobile broadband sim card (for iPads and wireless dongles)