There's been hardly any decent GPU deals. I get that the AUD has nosedived, but its been like this before that too. The only decent prices you find for GPUs are the techfast deals, but a lot of people just need to upgrade 1 component. And their parts tend to be low grade anyway.
I really hope new cards from AMD and Nvidia release soon, the pricing in the Australian market is just dire right now.
the best value cards are still the rx 470/570/480/580's, and thanks to miners there is a ton of them
https://www.ozbargain.com.au/node/514997
if you want something faster you just have to cough up the extra cash, the more you spend the less value you get, no amount of deals will save you from a falling AUD