What happens to my bill if I add a line?
Additional lines are charged $15 per line for shared data plans and $45 for the Unlimited plan. You can add a line to your Reach plan anytime during the billing cycle.
At the time of activation, you will be charged $15 per additional line if you are a group owner on a shared data plan, and $45 if you are a group owner on the unlimited data plan.
There is no prorated cost if you add a line during the middle of a billing cycle.