I want to know about Go Prising Plugins. Can we accumulate the price of a plan and 4 supported plan

I want to purchase price plan plugin which can provide the functionality like
https://www.tpg.com.au/nbn use in it. select a plan should show relative sub plan.
Also accumulate the price of a plans and 4 sub plan and show total price at the end.
Is there online support
available to get more information.Please reply thanks