Australian retail prices of film in general and Instax in particular are ridiculous. I only buy retail when I have planned poorly and have run out and need some urgently to tide me over.
All other times I order from China for at least half the price.
My favourite seller for regular instax wide film is currently dwi-digital-cameras because they have been reliable so far and ship fast (bought from them several times). They apparently have a website but I don't see these deals on there.
Updated with GST:
100 for $127 - https://www.ebay.com.au/itm/BRAND-NEW-FUJIFILM-FUJI-INSTAX-W…
100 for $131 - https://www.ebay.com.au/itm/Fujifilm-instax-Wide-film-Photo-…
200 for $231 - https://www.ebay.com.au/itm/EXPRESS-SHIP-FUJI-FUJIFILM-INSTA…
300 for $341 - https://www.ebay.com.au/itm/EXPRESS-SHIP-FUJI-FUJIFILM-INSTA…
Plus ebay coupons sometimes work with them so check for any current ones before ordering.
Can get them lower price in smaller quantities.
This one is $1.09 each.
https://www.ebay.com.au/itm/Fujifilm-Instax-Instant-Imaging-…
It’s good to point out that they’re cheaper than in Aus, but you can get them on eBay at the $1 price point all the time.