How much would unlimited talk text and data be for at&t for 4 iphones?

I know there's no plan that has unlimited everything in one plan, so you would have to have like unlimited talk + unlimited text + unlimited data so what would the amount total to?

For 4 iPhones, $250+ a month.

Solavei offers nationwide, unlimited talk text and data for $49 for each phone. Total costs $198.It is in partnership with T-mobile currently for US Residents. You can use iPhone 3 & 4 on their network or any unlocked GSM phone. There's a November special going on. If you sign up by Nov. 30th, you get your 1st month and sims card free.