I went with the new $30 data +100 min. plan. For me, it's a bargain. Up to 5gb at 4g speed, they say. You have to activate that plan with a fresh SIM bought and registered online or via Walmart. Not available in TMO stores.
100 minutes is quite limited but at ,10 per minute afterward, it will take 200 minutes more to hit $50. So, consider it 5gb + 300 minutes for $50 at 4g.
Appears too limited, but the data allocation is high, text is unlimited and it flexes to your overage minutes at friendly rates if you look at it that way.