I already have 3 lines with AT&T and really wanted the 4s so I added a 4th line although I don't need it just so I can get the 4s at the discounted contact price. The way I see it is I have to pay $10 extra on my bill for the 4th line since it's on a family plan and by the end of the contract it would have cost me $240 total which is still $10 cheaper than the $250 early upgrade fee. Has anyone added a line they don't need to get the new iphone?