Hello, I have just switched to the NBN network and sucessfully connected today. Im on the NBN 50Mbps plan. on a non lock in contract. Ive heard that i can change plans, id like to test out the NBN 100Mbps plan, since ive already paid $79 for the 50Mbps plan, the NBN 100 Mbps plan is $99 with unlimitted calls will i have to pay $20 extra to upgrade or the full $99?
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