Do they also trade as camerastore-australia on eBay?
The website states that camerastore.com.au is backed by one of Australia's largest camera retailers, domain registry reveals Diamonds Camerastore.
diamondscamera.com.au sells similar products but at higher price.
Perhaps they want to be competitive online without undercutting the B&M shopfronts, so they use two websites.
Anyway, just want to make sure they are legit before ordering.
I have never heard of them. But they have a free phone number so ring them up - HOT LINE: 1800 155 067.
Also look at productreview - https://www.productreview.com.au/p/camerastore-com-au.html and make your own opinion.