As per the link, and as seen on Ausdroid.
One 365 day for you, one for a friend. Comes with 2 SIM cards so unlikely the same user can use for 2 years.
All plans get unlimited calls, texts and MMS.
Medium Plan: 6GB Data every 30 days, $299.90 ($12.50 per user per month)
Large Plan: 16GB Data every 30 days, $399.90 ($16.66 per user per month)
Extra Large Plan: 23GB Data every 30 days, $529.90 ($22.08 per user per month)
Note: Kogan Mobile uses the Vodafone 4G Network, and Kogan Mobile does not offer International Roaming.
MOD: Please do not sell / trade your Koganmobile vouchers in the comments section. Use the Classifieds forum.