Also worth noting: once you cross 6GB, they stop billing. Basically, your bill is capped at $80 + taxes, so that one month that you end up using 250 GB doesn't cost you $2500, it costs $80.
At the top end (6 group members) the max per user cost (if splitting evenly and not proportioned based on individual usage) is $50, compared to $80 for one user.
This is a bit misleading. They throttle you to 256kbps after 15GB, but give you the option to lift the limit by paying $10/GB for the data you use past 15GB in a given cycle.
It's literally impossible to reach 250GB without paying extra. After being throttled the most you'd be able to download is 82.94GB, assuming you were downloading things non-stop at the maximum speed for 30 days.
https://support.google.com/fi/answer/6201699?hl=en&ref_topic...
At the top end (6 group members) the max per user cost (if splitting evenly and not proportioned based on individual usage) is $50, compared to $80 for one user.