Went into Harvey Norman to sign up for the $105 100GB lease plan with Optus (+20% off pm when porting from another carrier), and was told about an even better plan which isn't being publicly advertised.
$145 My Plan Plus @ $105
-20% for porting to Optus @ HN = $84/Month.
24 month (non-lease) contract
Unlimited Calls/TXT overseas in Zone 1.
Total plan cost ~$2016 ($84x24).
I was told it was a 'regional' plan, but apparently all of WA is considered regional.
Seems to be running at this price for the entire month of August, and can be stacked with the 20% off deal when porting to Optus at Harvey Norman.
Seems like an amazing deal for the 512GB Galaxy Note 9 with an RRP of $1799 (once the free upgrade from 128GB expires), considering you get to keep the phone at the end of the contract. Or sell the phone outright and you have 200Gb/month for cheap.
Original 20% off deal at Harvey Norman: https://www.ozbargain.com.au/node/395908
EDIT: Seems that this HN 20% deal may have been extended until the 26th Aug, however keep in mind that the free upgrade from 128GB to 512GB will expire when the phone is released on the 24th