http://www.pcworld.com/article/181673/ap...

looks like Verizon will offer a $50 per month total cost for a data-only plan .. AT&T is going in the same direction

In the CC, CEO said it costs them less to offer world plan on iphone as they do not need to pay for router, etc .. so expect the vg world mobile to be lower than $25 .. maybe $15

so user pays $50 a month for broadband and can sign up to an monthly VG world service at $15 a month to have unlimited phone capability anywhere to US and 60 countries..

Maybe $15 if you are not a VG world home user and $30 if you want at home and on cell phone.