It's got the usual 100 MB free for two years.

The only purpose is to have people get through the 100 MB and then pop them over to a page to either sign up for another plan or buy more pay as you go time.

It's like a doughnut shop passing out free samples out front.

They get $20 a month for people who want 1 GB of data a month, they aren't going to give that away for free.