Seems to be a good price.
The deal states that it is '2 for $8' but it will actually allow you to buy one bottle for $4.
This size bottle seems to go for around $12 at the likes of Countdown and drops down to $8 on special usually.
The Warehouse has it for $6.50 if you don't have a Bargain Chemist or want to try a price match there instead.
Shipping is free for orders over $50 or $5.99 otherwise.
The product photo for the Aloe version shows a 225ml product. Probably just an incorrect photo.