Worked out to be AUD$361.70 in total, delivered.
Bosch Injectors £28,78ea (~AU$50ea)
Delivery £111 (AU$193.20)
[no doubt vat removed sees it lower]
https://www.buycarparts.co.uk/bosch/677233
Could be a worthy contender. Pad it with filters wiperblades or what ever you've got coming up (maintenance wise) and that makes it all the more sweet.