I'm using Freedompop, which is a Sprint MVNO, besides the upfront costs being pretty on par with aftermarket devices sales (I have their Galaxy S4, cost $350) t

I'm using Freedompop, which is a Sprint MVNO, besides the upfront costs being pretty on par with aftermarket devices sales (I have their Galaxy S4, cost $350) their monthly rates go from free, which I'm currently on, to $20 a month for unlimited talk / text / 3g data, which my mother uses. In any case that beats major carriers in a matter of months. The same could be said of a lot of the Sprint MVNOs - Ting and Republic Wireless are also hyper aggressive price wise and always come out ahead of the major carriers in a matter of months (except T-Mobile, especially if you need a lot of data).