How much does an iphone 4s cost monthly without texting?

Verizon
is there anyway it can cost under $30 a month? Or as cheap as possible?
i don't want texting on it
if i get an iphone 4 instead, will it be cheaper?

Verizon is one on the most expensive mobile carriers, there are no plans without texting, and no Verizon plans that cheap (with data). You are not going to be on Verizon with an iPhone for anywhere near $30.

Virgin Mobile has a $35 plan.