First payment: $397 USD (non-refundable)
4 months later: $300 USD
4 months later: $300 USD
First payment: $500 AUD (non-refundable)
4 months later: $500 AUD
4 months later: $500 AUD
You will notice that for the installment option, the first payment of $397(USD) will appear as two separate amounts of $97 + $300 as this is how the 'system' works.
The deposit is non-refundable for the installment payment option.