It ain't necessarily so.
Verizon To Allow Free Mobile Hotspot Tethering With The New iPad [Verizon iPads Will Have Free Mobile Hotspot Access, AT&T Not To Allow iPad Tethering] | TFTS
Verizon�s customer service team claimed that new iPads bought with a Verizon 4G connection would be allowed to tether to other devices and share the data connection, and they later clarified that by saying that all of their tablet data plans include mobile hotspot access. So there will be no extra cost.