Comment by steffan

This is the equivalent of having the previous 50GB base plan and going over by $50 worth of data (an additional 50GB). If you were routinely going 50GB over the 50GB plan, I'd suggest that maybe a 50GB plan wasn't the right plan for you. Under the old plan, 100GB of data would have cost $100. Residential unlimited is $120, so for most users this would seem like an improvement.