Solavei is $49 unlimited Data, Talk Text, plus your local tax.
You have to have a GSM phone, unlocked. If it was used on T mobile you won't need to have it unlocked.
they have a one time sign up fee of about $49, but its prepaid service, no contracts, and great service for where I live. Visit the link below:
You can learn all about Solavei, and check the coverage map to make sure you have service. I have used all the major providers and for the price and coverage, I am happy with Solavei.