50 Hours/month

$10/month gives you just over an hour a day to be connected to the Internet

100 Hours/month

For only $15/month you can be connected to the Internet for just over 3 hours a day.

240 Hours/month

Eight hours a day on the Internet is possible by paying $17.50/month.

480 Hours/month

$20/month will give you 16 hours per day of Internet service.  That allows 8 hours to sleep the rest of the day.