I was wondering if there is a pre paid cell phone plan out there that lets you buy cards to load your minutes. I am looking for the cheapest one. My wife needs a cell phone that she will only be using about 5 times a month. 60 minutes a month would be enough. I don't really want to go with something that is $20-30 a month always. Is there something that would be cheap an you can just pay for minutes used?