I have been searching for the ipad 3g data plan cost as I came to know that $15/mo unlimited 3g plan does not exist any more. Now we need to pay some monthly amount according to the usage I guess.Can someone tell me if there is any pack for 3g data plan or I have to pay a monthly rental. If I have to pay a monthly rental than how much I need to pay I mean How much is ipad 3g data plan cost?