20% off on The Good Guys gift cards when purchased at Australia Post from 30 April to 13 May.
PS: Although the deal technically starts on the 30th, some Australia Post outlets seem to be honouring the deal now.
PPS: Looks like the link has been photoshopped out of the Australia Post official catalogue. And the link has been removed from Lasoo. I've updated the link to the catalogue. It is on the bottom of page 5 of the catalogue.
Guys if you think it's taking a long time to put them through at Aust Post wait until just wait until you get to the other end at good guys. These cards have a sticker over the pin on the back of the card and that sticker is super hard to remove, the checkout girl at GG groaned as soon she saw my cards said she hates them. She scratched and scratched at that sticker and it wouldn't come off. In the end my Mum and I who both have long finger nails stood there picking off the stickers while the girl put them through the till after each card was put through the till the computer froze for 1.5-2 mins before it would allow her to swipe the next one, reckon we were picking those stickers off for a good 10-15 mins and we only had 6 cards.
TLDR - Consider taking a sharp scraping tool to GG with you to allow easy removal of pin sticker