Just aw this on google ads via ozbargain website.
https://support.jbhifi.com.au/hc/article_attachments/6756043…
There also seems to be a $400 cashback on $4000 spend that ends 25/4/2023
T&Cs
Spend $1,000 or more in one transaction using your Zip Pay or Zip Money Account at JB HI-FI to earn $100 cashback. Cashback redeemable when you reach the Rewards Goal. Promotion limited to one redemption per Customer. Excludes gift cards. Promotion starts at 8:00AM AEST on 13 April 2023 and ends 11:59PM AEST on 15 April 2023.
Can quite comfortably get 10% off jb gift cards at Colesworth every second week and won't need to spend 1k to get the discount, so isn't worth it imo