its limited packages, aimed purely at the tiny business website. I have three packages, 10MB, 30MB and 70MB. This serves a number of purposes.

1. Limits the amount of risk from overselling 2. Increases the profitability of the server 3. Prevents abuse (people uploading mp3's, videos etc) 4. Easier Maintenance

I am flexible however, so if a customer needs a little more room I wont charge the earth for it.