seems this is cheaper:
180 days plan comes with BONUS data
https://www.lebara.com.au/welcome-offer
USE VODA NETWORK.
cheaper than similar Kogan plan ($254-ish at the moment https://www.ozbargain.com.au/node/359466), less 1 GB but incl international call to many not all countries.
https://www.lebaraonline.com.au/lebara-mobile/lebara-recharg…
the question is when the latest we can activate this? my 365days kogan will exp in 20 Dec 2018.
answer from live chat: Within 60 days from the Date of purchase.
thanks to @RichardL
The Large 180 days has a new customer offer for $99 if you don't want to commit for a year.
https://www.lebara.com.au/mobile-plans/longterm-plans
Online chat confirmed voucher is valid for 60 days from purchase.
Rep also confirmed 4GB bonus is only for first 6 months