I availed myself of this one last night at the Bourke St store in Melbourne, and it was as simple as that - Bought the phone, gift card free in the bag, no fuss.
Pretty good deal if you figure you'll spend $300 at JB at any point in the future, basically brings the pricetag down to $699.
I didn't press the issue of trying to see if I could apply the card to the phone in some way.
Swapped because I was sick of my Pixel 6 Pro's poor battery life on 5G, and the new Pixel 9 still uses a Samsung modem that's a notorious underperformer on 5G, and the new phone seems to be doing a great job so far.
Looked around and didn't see much I liked in the flagship market at the moment, so decided to save a bit of money and go with something a step below.
125W charging brick w/cable (and damn the speed is impressive), and a pretty shit case included in the box.
Also consider the ThinkPhone which occasionally goes on sale for $799: https://www.jbhifi.com.au/products/thinkphone-by-motorola-5g…
Comparison: https://nanoreview.net/en/phone-compare/motorola-thinkphone-…