First month free on 2, 4, 10 and 20GB plans (obviously there's no reason to go for the former 3).
No contract, so you can port out after the first month (and it's recommended you do so, their regular prices are uncompetitive).
Could be good for a burner SIM or a quick port in and out for any SIM sluts who usually cycle between $5 or $15 plans from Catch Connect and Kogan Mobile.
Must be activated within 2 months (presumably from purchase date, so 26th of April if you order as late as possible on the 26th February). Limited to 2 customers per address.
ShopBack and CashRewards have 8 and 7% cashback respectively. They should track at the regular price.
There is a referral system, but you cannot have a promotion and a referral reward at the same time. Entering a referral number will only reward the referrer, nothing for the referee.
Uses the Telstra Wholesale network (like ALDImobile), not full fat Telstra (like Telstra and Boost Mobile).
What network are they on?