[gTen]

lets assume you torrent(upload+download) and have around 200kb/sec, thats 12mb/min, thats 720mb/hour and 17.28GB/day

I used 1000 as calculation instead to 1024 just to make it easier and I based it off 200kbps for both download and upload which should be easily attainable considering

Sprint -
Average download speed, EV-DO Rev. A: 1361kbps (170 kilobytes/sec)
Average upload speed, EV-DO Rev. A: 267kbps (33 kilobytes/sec)

As you can clearly see maxing out 100gb in a month shouldn't be a problem, mostly if you are in the top of those averages.

this is also based on you not disconnecting and other circumstances and etc.

Edit: Also, this would mean in a 31 day month you would be able to do 535.68gb, don't try this at home >.>