this is back - today only i think
$10 Credit Back with over $30 Spend @ Groupon
https://www.ozbargain.com.au/node/459799
t&c
http://host.groupon.com.au/terms/promo/10back
$10 credit back is valid for purchases of $30 or over (before shipping). Promocode is valid until midnight on the 02/07/2019. Your $10 Groupon credit will be deposited into your Groupon account within 2-5 business days and you will receive a confirmation email. Credit will be valid for 30 days.
i dont like this bit : Credit will be valid for 30 days.
but past experience, before expiry if you need more time just do chat and they can extend for another 30 days i believe YMMV
dont forget cashbacks
this groupon, made me spend more than i can afford. more evil than pokies machine