Comcast will squeeze you for $ 10 for each 50 GB over limit.
Thanks for the extra 0.2TB increase Comcast but that is still not enough for 2020 IMO. People have streaming services, video conferences / calls, cloud backup, cloud security cameras, kids streaming school, work from home folks doing meetings and video calls, Skype, zoom, etc. The world is going to the cloud and Comcast is still on the stone age plan for data caps.