If you're going to the USA for an extended period of time, our USA SIM card is perfect for you because you can keep recharging it every 30 days.
Your initial purchase will comprise the SIM card itself ($45) plus the cost of your plan, eg USA Canada and Mexico Max Plan ($69).
You can then recharge every 30 days on our website and you just pay the cost of the plan (you don't have to pay for another SIM card).
Also, you can change plans each month.