I got the letter too .
Checked karoo site on my bandwidth an it peaked at 21gb for a month and on average its around 16gb.
So I figured the only benefit of "going pro" is that i "could get speeds of 15MB instead of my alleged 8GB but then im thinking wont i use up more bandwidth with the quicker speed...
no ta.
my upload is quicker on my 3g mobile which i found outstanding too!
What is this max usage based on ? from the way it reads its only applicable to downloading during peak hours, listed by Karoo as (6pm – midnight). I highly doubt I have downloaded over 40GB during these times. It seems to me they are counting this usage on all time during the month, not their listed peak times.