At this point the only people left directly using the infrastructure companies don't care about money. For each of the infrastructure providers, there are many

At this point the only people left directly using the infrastructure companies don't care about money. For each of the infrastructure providers, there are many competitive MVNOs with prices plainly on their websites. You should be able to get a regular plan for ~$40/mo, and even a bare bones paygo for $10/3mo.