"Get Facebook, Twitter, and Google for just $9.99/mo!"
"Add on the video package and get Netflix and Hulu for only $24.99/mo more!"
"News junkie? Get BBC, NY Times, CNN for $7.99/mo."
The reality is of course much more nuanced than that (what's more likely is we'll see these sites being offered bandwidth cap exemptions and faster loading; not outright blocks if you don't pay up), but it conveys the message in a easy-to-digest fashion for the lay person. They're used to this already with their cable packages.
Example: http://i.imgur.com/rL33yEm.jpg