That seems to be a bit much. I have 2 original Echos, 3 Dots, and 2 Echo Shows around the house. My total bandwidth for the last 30 days for all of the Echos is approx 3GB down and less than 0.5GB up. To put things in perspective, our Netflix viewing accounted for 36GB down, 0.7GB up in the last 30 days. I have Netflix configured to the medium bandwidth setting which according to them is about 0.7GB per hour. Everyone in my house has the habit of stopping whatever they're streaming when they are done. On Netflix, pause it or go to the home screen. On Echo, tell Alexa to stop.