i am thinking of buying the iphone with the plan but i want to sell the iphone but i am wondering how much it will cost to buy the iphone if you already have a contract with them i am wondering because if its just 200 then i was thinking of buying one iphone for me and then just buying other iphones to sell but if its like 600 for the phone once i get the plan with them then its just not worth it so can somebody help me with this