Last time when I tried to claim GST refund for my Macbook Pro and Switch I was told that I have exceeded the limit of $800 iirc, and luckily the border agent was understanding when I said that the Macbook's a gift.
This time around, I'm bringing a camera kit worth $4,000 from two different vendors, what's the possibility of them denying me the refund? For clarification I do not have an Australian passport. Would they approve the refund if I don't intend to bring them into the country when I return?
Yes