What is the process for pre ordering NBN plan on the 18 month contract?
You can start with the pre order on this link: https://www.tpg.com.au/nbn
What speeds can I expect? As I do not want to pay more for something I won't be getting.
Plan downgrade and upgrade are free of charge so you can easily choose the best plan for you.
And with the upgrade or downgrade of NBN plans - when will the next price change take effect?
Upon completion of the change of plan, the new price will take effect.