IHEARTMUM
In addition to the title deal, for those who don't have a gel nail system, they also have this deal running:
"Choose a mani-pedi starter pack for $129 (includes Mani-pedi UV LED lamp + one colour of your choice + top coat) and get a MINI-KIT for free (includes a gelicious mini lamp + 'Bikini wax' colour - which is an orange and a top coat worth $119). Limited stocks."
Unfortunately, the 40% discount doesn't apply to this deal.
Now to the title deal -
Huge 40% off all gelicious colours, just add coupon code of "IHEARTMUM" at check-out.
Buy three colours, get one free. So once you add your fourth colour to the cart, the price of the fourth polish will be deducted. Can confirm that this also works for 8 polishes as well.
Free delivery is the icing on the cake! When going through check-out, just select the option for free delivery.
No expiry date mentioned.
I love Gelicious! They're based in Sydney (always nice to support local companies!), have great products, awesome colours and kits and excellent customer service. They really go out of their way to help customers with their enquiries and stuff.