I have verizon in NY, and their ulimited data cost me 45 a month on top of a 45 plan. ThIs does not include authorized tethering, this officially costs 60 a month I think. Those numbers are 2 years old however. Few Verizon phones officialy support tethering, fewer still unoficially. I have discounts on both my phone and data or I would't touch it. You can't beat evdo speed and coverage in ny though.