This previous deal is back until the end of the month: https://www.ozbargain.com.au/node/463152.
Thanks to dailygringo for pointing out that 14% cashback is also available from Shopback (up from 7%) - not sure how long this will last for. As etan has pointed out, this code isn't listed with ShjopBack.
From the previous deal (thanks to nickj):
Tick are one of the cheaper travel insurance providers, yet currently one of 3 policies recommended by Choice and underwritten by Mitsui Sumitomo, and they get mostly decent reviews on ProductReview, especially when you dig deeper into reviews from people who have made claims.