Not sure this is a 'deal' and I can't post comments to https://www.ozbargain.com.au/node/396327 but I saw that Telstra increased the data caps on their sim only plans https://www.telstra.com.au/mobile-phones/sim-only-plans
I just contacted Telstra live chat and they agreed to add 10GB for the 49$ plan without changing the details (i.e. keep the port in credit)
Other people might be interested in doing this :)
https://www.ozbargain.com.au/node/342769
Will they add 10gb to this deal?