The price of BTC was trading for as low as A$34,863 ($22,670) on Binance Australia. This is about A$7,516 lower than the average price on other platforms including Independent Reserve and CoinJar.
https://www.bloomberg.com/news/articles/2023-05-30/bitcoin-btc-discount-emerges-on-binance-australia-ahead-of-payment-cutoff
https://www.bloomberg.com/news/articles/2023-05-30/bitcoin-btc-discount-emerges-on-binance-australia-ahead-of-payment-cutoff