T&Cs:
"*You must be a Qantas Frequent Flyer member to earn and redeem Qantas Points. Membership and Qantas Points are subject to the Qantas Frequent Flyer program terms and conditions. 10 Qantas Points (instead of the standard 1 Qantas Point if shopping at kogan.com) per $1 spent will be earned by members who purchase eligible products between 12:01am (AEDT) 4 December 2017 and 11:59pm (AEDT) 6 December 2017. 'Eligible Products' means products sold on Kogan.com, other than Kogan Travel products. To earn Qantas Points, Qantas Frequent Flyer members must create a Kogan.com account, add their Qantas Frequent Flyer membership number to it and purchase eligible products. Instructions on how to create an account and enter your Qantas Frequent Flyer details can be found here. Allow up to 60 days after purchase for your Qantas Points to be credited to your Qantas Frequent Flyer account. Any purchases that are cancelled or refunded will not earn Qantas Points."
Seems to apply to Kogan Mobile plans/vouchers, making the 40% off deal at https://www.ozbargain.com.au/node/337570 even sweeter.