Online rep said they can take off the "monthly handset cost" making this Samsung Galaxy S3 - 4G on $30 Plan.
It has better network over Vodaphone.
Rollover credit facility:
Any unused included value in a given month will roll over to the
following month only, and is used once the following month’s
included value is exhausted. Your first month’s included value will
be pro-rated according to the date of your first bill or the date you
upgraded or changed your rate plan.
$7 monthly fee on $30 plan. I think vodaphone had it for free on $30 plan.